Revisions for Electronic Hydrogen Sulfide Sensors
| 62 | ewilder |
June 17, 2014 01:56
| almost 10 years ago
PurposeHydrogen sulfide, which is a well documented but little understood health hazard, is one of the leading causes of injury in the workplace. Health issues have been clearly linked to H2S, and since 2011 the EPA has required the oil and gas to report their emissions to the Toxics Release Inventory (TRI). Despite this much hydrogen sulfide still gets into the air with little regulation (Fracking Boom Spews Toxic Air Emissions on Texas Residents). Public Lab researchers are attempting to innovate novel, low-cost community based approaches to environmental health problems like hydrogen sulfide, so that communities and workers may begin not only developing systems to track their exposure, but also generating data and evidence in order to scientifically validate their experiences. The photopaper sensing tool is being developed to detect hydrogen sulfide in an affordable, quantifiable manner. In September of 2011, Public Laboratory members met with residents of Garfield County, Colorado to discuss the growing hydrogen sulfide problem in their small, rural community. The community had recently organized to take a gaseous grab sample from one resident’s kitchen sink. Analysis of the grab sample showed hydrogen sulfide levels of more than 185 times above the long-term exposure level recommended by the EPA (Gassed by Global Community Monitoring). The family, in which the son developed painful skin lesions and other symptoms coincident with this exposure, was forced to abandon the house. They are seeking legal assistance, but so far, neighboring gas development companies have denied association with the families water contamination. The grab sample, while able to capture one record of exposure, was costly (over $500) and had to be shipped to a lab in California within 24 hours in order to ensure the samples viability. The family did not hear results of the test for weeks, all the while continuing their exposure. Basic Information on Hydrogen Sulfide Hydrogen Sulfide Monitoring in Gas Patch: Background Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Development HistoryWe currently have two approaches to sensing hydrogen sulfide in development. First Prototype: Digital Sensor Our first prototype used a digital sensor for hydrogen sulfide. Advantages of this system is that data from the sensor could be logged over time and that tool is reusable and portable. However the Figaro TGS 825 sensor itself is relatively expensive--approximately $60 for an individual sensor and $40 in bulk.
Arduino and Industrial H2S Sensor More information on the digital sensor: Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor Arduino Patch for Detecting Hydrogen Sulfide Hydrogen Sulfide Detection for Fart Detector Second Prototype: Photographic Paper Our second prototype uses photographic paper to detect hydrogen sulfide. The silver halide in photographic paper tarnishes when exposed to H2S. The paper changes color inside the canisters depending on the level of H2S it has been exposed to, with darker strips indicating higher levels of exposure. This method is low-cost, easy to assemble using everyday materials, and may be more accessible to non-programmers.
Photographic Paper for H2S Sensing More information on the photographic paper: Hydrogen Sulfide Testing with Black and White Film Hydrogen Sulfide Tarnishing Silver Controlled Testing with B&W Film Hydrogen Sulfide Detectors Protocol This project is based on these two papers by geologist C. J. Horwell and colleagues that used photographic paper to measure hydrogen sulfide concentrations near volcanos in New Zealand. Horwell, C.J., Allen, A.G., Mather, T.A., Patterson, J.E., 2004. Evaluation of a simple passive sampling technique for monitoring volcanogenic hydrogen sulphide. J. Environ. Monitor. 6, 630 - 635. Horwell_JEM_2004_copy.pdf Horwell, C.J., Patterson, J.E., Gamble, J.A., Allen, A.G., 2005. Monitoring and mapping of hydrogen sulphide emissions across an active geothermal field: Rotorua, New Zealand. J. Volcanol. Geotherm. Res. 139, 259-269. Horwell_JVGR_2005_copy.pdf
Original photopaper map made by Horwell et al. Field Test SitesAztec, New Mexico
Map of area to be tested in Aztec, NM Choosing Test Sites in Aztec, NM Identifying Wells in Field and Experiment Design Collection and Processing of Aztec Test Strips Analyzed Results and Suggested New Steps for H2S Testing in Aztec, New Mexico New Experimental Design, Aztec, New Mexico New Container Tests, Aztec, New Mexico Designs for Next Round of Experiments, Aztec, New Mexico Powder River Basin, Wyoming
Results of three rounds of testing in Deaver, WY [Photopaper Sensing Tool - Development Notes, Deaver, WY] (http://publiclab.org/notes/ewilder/06-16-2014/hydrogen-sulfide-photopaper-sensing-tool-development-notes) Wyoming Hydrogen Sulfide Testing 2013-2014 How to make your own
Canisters in the process of being set up Below are resources for making your own H2S test kit! How to Guide: Short-term goals:
Start Contributing and Get involved!If you are interested in helping develop hydrogen sulfide sensing, please contribute thoughts, comments and research notes on this page as well as join us on the Public Lab mailing list. Currently active work on the film assay is being done at Northeastern University by Sara Wylie, Elisabeth Wilder, Deb Thomas, Cait Kennedy, Megan McLaughlin, and Hannah Gartner. Feel free to contact any of the people listed above if you are interested in getting more involved. You can also try following the prototype documentation to make your own film testing strips, and be sure to share any new tests sites or uses for this tool. This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section |
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| 61 | ewilder |
June 16, 2014 14:21
| almost 10 years ago
PurposeHydrogen sulfide, which is a well documented but little understood health hazard, is one of the leading causes of injury in the workplace. Health issues have been clearly linked to H2S, and since 2011 the EPA has required the oil and gas to report their emissions to the Toxics Release Inventory (TRI). Despite this much hydrogen sulfide still gets into the air with little regulation (Fracking Boom Spews Toxic Air Emissions on Texas Residents). Public Lab researchers are attempting to innovate novel, low-cost community based approaches to environmental health problems like hydrogen sulfide, so that communities and workers may begin not only developing systems to track their exposure, but also generating data and evidence in order to scientifically validate their experiences. The photopaper sensing tool is being developed to detect hydrogen sulfide in an affordable, quantifiable manner. In September of 2011, Public Laboratory members met with residents of Garfield County, Colorado to discuss the growing hydrogen sulfide problem in their small, rural community. The community had recently organized to take a gaseous grab sample from one resident’s kitchen sink. Analysis of the grab sample showed hydrogen sulfide levels of more than 185 times above the long-term exposure level recommended by the EPA (Gassed by Global Community Monitoring). The family, in which the son developed painful skin lesions and other symptoms coincident with this exposure, was forced to abandon the house. They are seeking legal assistance, but so far, neighboring gas development companies have denied association with the families water contamination. The grab sample, while able to capture one record of exposure, was costly (over $500) and had to be shipped to a lab in California within 24 hours in order to ensure the samples viability. The family did not hear results of the test for weeks, all the while continuing their exposure. Basic Information on Hydrogen Sulfide Hydrogen Sulfide Monitoring in Gas Patch: Background Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Development HistoryWe currently have two approaches to sensing hydrogen sulfide in development. First Prototype: Digital Sensor Our first prototype used a digital sensor for hydrogen sulfide. Advantages of this system is that data from the sensor could be logged over time and that tool is reusable and portable. However the Figaro TGS 825 sensor itself is relatively expensive--approximately $60 for an individual sensor and $40 in bulk.
Arduino and Industrial H2S Sensor More information on the digital sensor: Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor Arduino Patch for Detecting Hydrogen Sulfide Hydrogen Sulfide Detection for Fart Detector Second Prototype: Photographic Paper Our second prototype uses photographic paper to detect hydrogen sulfide. The silver halide in photographic paper tarnishes when exposed to H2S. The paper changes color inside the canisters depending on the level of H2S it has been exposed to, with darker strips indicating higher levels of exposure. This method is low-cost, easy to assemble using everyday materials, and may be more accessible to non-programmers.
Photographic Paper for H2S Sensing More information on the photographic paper: Hydrogen Sulfide Testing with Black and White Film Hydrogen Sulfide Tarnishing Silver Controlled Testing with B&W Film Hydrogen Sulfide Detectors Protocol This project is based on these two papers by geologist C. J. Horwell and colleagues that used photographic paper to measure hydrogen sulfide concentrations near volcanos in New Zealand. Horwell, C.J., Allen, A.G., Mather, T.A., Patterson, J.E., 2004. Evaluation of a simple passive sampling technique for monitoring volcanogenic hydrogen sulphide. J. Environ. Monitor. 6, 630 - 635. Horwell_JEM_2004_copy.pdf Horwell, C.J., Patterson, J.E., Gamble, J.A., Allen, A.G., 2005. Monitoring and mapping of hydrogen sulphide emissions across an active geothermal field: Rotorua, New Zealand. J. Volcanol. Geotherm. Res. 139, 259-269. Horwell_JVGR_2005_copy.pdf
Original photopaper map made by Horwell et al. Field Test SitesAztec, New Mexico
Map of area to be tested in Aztec, NM Choosing Test Sites in Aztec, NM Identifying Wells in Field and Experiment Design Collection and Processing of Aztec Test Strips Analyzed Results and Suggested New Steps for H2S Testing in Aztec, New Mexico New Experimental Design, Aztec, New Mexico New Container Tests, Aztec, New Mexico Designs for Next Round of Experiments, Aztec, New Mexico Powder River Basin, Wyoming
Results of three rounds of testing in Deaver, WY Wyoming Hydrogen Sulfide Testing 2013-2014 How to make your own
Canisters in the process of being set up Below are resources for making your own H2S test kit! How to Guide: Short-term goals:
Start Contributing and Get involved!If you are interested in helping develop hydrogen sulfide sensing, please contribute thoughts, comments and research notes on this page as well as join us on the Public Lab mailing list. Currently active work on the film assay is being done at Northeastern University by Sara Wylie, Elisabeth Wilder, Deb Thomas, Cait Kennedy, Megan McLaughlin, and Hannah Gartner. Feel free to contact any of the people listed above if you are interested in getting more involved. You can also try following the prototype documentation to make your own film testing strips, and be sure to share any new tests sites or uses for this tool. This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section |
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| 60 | ewilder |
June 16, 2014 14:19
| almost 10 years ago
PurposeHydrogen sulfide, which is a well documented but little understood health hazard, is one of the leading causes of injury in the workplace. Health issues have been clearly linked to H2S, and since 2011 the EPA has required the oil and gas to report their emissions to the Toxics Release Inventory (TRI). Despite this much hydrogen sulfide still gets into the air with little regulation (Fracking Boom Spews Toxic Air Emissions on Texas Residents). Public Lab researchers are attempting to innovate novel, low-cost community based approaches to environmental health problems like hydrogen sulfide, so that communities and workers may begin not only developing systems to track their exposure, but also generating data and evidence in order to scientifically validate their experiences. The photopaper sensing tool is being developed to detect hydrogen sulfide in an affordable, quantifiable manner. In September of 2011, Public Laboratory members met with residents of Garfield County, Colorado to discuss the growing hydrogen sulfide problem in their small, rural community. The community had recently organized to take a gaseous grab sample from one resident’s kitchen sink. Analysis of the grab sample showed hydrogen sulfide levels of more than 185 times above the long-term exposure level recommended by the EPA (Gassed by Global Community Monitoring). The family, in which the son developed painful skin lesions and other symptoms coincident with this exposure, was forced to abandon the house. They are seeking legal assistance, but so far, neighboring gas development companies have denied association with the families water contamination. The grab sample, while able to capture one record of exposure, was costly (over $500) and had to be shipped to a lab in California within 24 hours in order to ensure the samples viability. The family did not hear results of the test for weeks, all the while continuing their exposure. Basic Information on Hydrogen Sulfide Hydrogen Sulfide Monitoring in Gas Patch: Background Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Development HistoryWe currently have two approaches to sensing hydrogen sulfide in development. First Prototype: Digital Sensor Our first prototype used a digital sensor for hydrogen sulfide. Advantages of this system is that data from the sensor could be logged over time and that tool is reusable and portable. However the Figaro TGS 825 sensor itself is relatively expensive--approximately $60 for an individual sensor and $40 in bulk.
Arduino and Industrial H2S Sensor More information on the digital sensor: Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor Arduino Patch for Detecting Hydrogen Sulfide Hydrogen Sulfide Detection for Fart Detector Second Prototype: Photographic Paper Our second prototype uses photographic paper to detect hydrogen sulfide. The silver halide in photographic paper tarnishes when exposed to H2S. The paper changes color inside the canisters depending on the level of H2S it has been exposed to, with darker strips indicating higher levels of exposure. This method is low-cost, easy to assemble using everyday materials, and may be more accessible to non-programmers.
Photographic Paper for H2S Sensing More information on the photographic paper: Hydrogen Sulfide Testing with Black and White Film Hydrogen Sulfide Tarnishing Silver Controlled Testing with B&W Film Hydrogen Sulfide Detectors Protocol This project is based on these two papers by geologist C. J. Horwell and colleagues that used photographic paper to measure hydrogen sulfide concentrations near volcanos in New Zealand. Horwell, C.J., Allen, A.G., Mather, T.A., Patterson, J.E., 2004. Evaluation of a simple passive sampling technique for monitoring volcanogenic hydrogen sulphide. J. Environ. Monitor. 6, 630 - 635. Horwell_JEM_2004_copy.pdf Horwell, C.J., Patterson, J.E., Gamble, J.A., Allen, A.G., 2005. Monitoring and mapping of hydrogen sulphide emissions across an active geothermal field: Rotorua, New Zealand. J. Volcanol. Geotherm. Res. 139, 259-269. Horwell_JVGR_2005_copy.pdf
Original photopaper map made by Horwell et al. Field Test SitesAztec, New Mexico
Map of area to be tested in Aztec, NM Choosing Test Sites in Aztec, NM Identifying Wells in Field and Experiment Design Collection and Processing of Aztec Test Strips Analyzed Results and Suggested New Steps for H2S Testing in Aztec, New Mexico New Experimental Design, Aztec, New Mexico New Container Tests, Aztec, New Mexico Designs for Next Round of Experiments, Aztec, New Mexico Powder River Basin, Wyoming
Results of three rounds of testing in Deaver, WY Wyoming Hydrogen Sulfide Testing 2013-2014 How to make your own
Canisters in the process of being set up Below are resources for measuring H2S using photographic paper with silver halide based on research done at volcanoes. How to Guide: Short-term goals:
Start Contributing and Get involved!If you are interested in helping develop hydrogen sulfide sensing, please contribute thoughts, comments and research notes on this page as well as join us on the Public Lab mailing list. Currently active work on the film assay is being done at Northeastern University by Sara Wylie, Elisabeth Wilder, Deb Thomas, Cait Kennedy, Megan McLaughlin, and Hannah Gartner. Feel free to contact any of the people listed above if you are interested in getting more involved. You can also try following the prototype documentation to make your own film testing strips, and be sure to share any new tests sites or uses for this tool. This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section |
Revert | |
| 59 | ewilder |
June 16, 2014 14:19
| almost 10 years ago
PurposeHydrogen sulfide, which is a well documented but little understood health hazard, is one of the leading causes of injury in the workplace. Health issues have been clearly linked to H2S, and since 2011 the EPA has required the oil and gas to report their emissions to the Toxics Release Inventory (TRI). Despite this much hydrogen sulfide still gets into the air with little regulation (Fracking Boom Spews Toxic Air Emissions on Texas Residents). Public Lab researchers are attempting to innovate novel community based approaches to environmental health problems like hydrogen sulfide, so that communities and workers may begin not only developing systems to track their exposure, but also generating data and evidence in order to scientifically validate their experiences. The photopaper sensing tool is being developed to detect hydrogen sulfide in an affordable, quantifiable manner. In September of 2011, Public Laboratory members met with residents of Garfield County, Colorado to discuss the growing hydrogen sulfide problem in their small, rural community. The community had recently organized to take a gaseous grab sample from one resident’s kitchen sink. Analysis of the grab sample showed hydrogen sulfide levels of more than 185 times above the long-term exposure level recommended by the EPA (Gassed by Global Community Monitoring). The family, in which the son developed painful skin lesions and other symptoms coincident with this exposure, was forced to abandon the house. They are seeking legal assistance, but so far, neighboring gas development companies have denied association with the families water contamination. The grab sample, while able to capture one record of exposure, was costly (over $500) and had to be shipped to a lab in California within 24 hours in order to ensure the samples viability. The family did not hear results of the test for weeks, all the while continuing their exposure. Basic Information on Hydrogen Sulfide Hydrogen Sulfide Monitoring in Gas Patch: Background Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Development HistoryWe currently have two approaches to sensing hydrogen sulfide in development. First Prototype: Digital Sensor Our first prototype used a digital sensor for hydrogen sulfide. Advantages of this system is that data from the sensor could be logged over time and that tool is reusable and portable. However the Figaro TGS 825 sensor itself is relatively expensive--approximately $60 for an individual sensor and $40 in bulk.
Arduino and Industrial H2S Sensor More information on the digital sensor: Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor Arduino Patch for Detecting Hydrogen Sulfide Hydrogen Sulfide Detection for Fart Detector Second Prototype: Photographic Paper Our second prototype uses photographic paper to detect hydrogen sulfide. The silver halide in photographic paper tarnishes when exposed to H2S. The paper changes color inside the canisters depending on the level of H2S it has been exposed to, with darker strips indicating higher levels of exposure. This method is low-cost, easy to assemble using everyday materials, and may be more accessible to non-programmers.
Photographic Paper for H2S Sensing More information on the photographic paper: Hydrogen Sulfide Testing with Black and White Film Hydrogen Sulfide Tarnishing Silver Controlled Testing with B&W Film Hydrogen Sulfide Detectors Protocol This project is based on these two papers by geologist C. J. Horwell and colleagues that used photographic paper to measure hydrogen sulfide concentrations near volcanos in New Zealand. Horwell, C.J., Allen, A.G., Mather, T.A., Patterson, J.E., 2004. Evaluation of a simple passive sampling technique for monitoring volcanogenic hydrogen sulphide. J. Environ. Monitor. 6, 630 - 635. Horwell_JEM_2004_copy.pdf Horwell, C.J., Patterson, J.E., Gamble, J.A., Allen, A.G., 2005. Monitoring and mapping of hydrogen sulphide emissions across an active geothermal field: Rotorua, New Zealand. J. Volcanol. Geotherm. Res. 139, 259-269. Horwell_JVGR_2005_copy.pdf
Original photopaper map made by Horwell et al. Field Test SitesAztec, New Mexico
Map of area to be tested in Aztec, NM Choosing Test Sites in Aztec, NM Identifying Wells in Field and Experiment Design Collection and Processing of Aztec Test Strips Analyzed Results and Suggested New Steps for H2S Testing in Aztec, New Mexico New Experimental Design, Aztec, New Mexico New Container Tests, Aztec, New Mexico Designs for Next Round of Experiments, Aztec, New Mexico Powder River Basin, Wyoming
Results of three rounds of testing in Deaver, WY Wyoming Hydrogen Sulfide Testing 2013-2014 How to make your own
Canisters in the process of being set up Below are resources for measuring H2S using photographic paper with silver halide based on research done at volcanoes. How to Guide: Short-term goals:
Start Contributing and Get involved!If you are interested in helping develop hydrogen sulfide sensing, please contribute thoughts, comments and research notes on this page as well as join us on the Public Lab mailing list. Currently active work on the film assay is being done at Northeastern University by Sara Wylie, Elisabeth Wilder, Deb Thomas, Cait Kennedy, Megan McLaughlin, and Hannah Gartner. Feel free to contact any of the people listed above if you are interested in getting more involved. You can also try following the prototype documentation to make your own film testing strips, and be sure to share any new tests sites or uses for this tool. This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section |
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| 58 | HannahJG |
June 16, 2014 13:57
| almost 10 years ago
PurposeHydrogen sulfide, which is a well documented but little understood health hazard, is one of the leading causes of injury in the workplace. Health issues have been clearly linked to H2S, and since 2011 the EPA has required the oil and gas to report their emissions to the Toxics Release Inventory (TRI). Despite this much hydrogen sulfide still gets into the air with little regulation (Fracking Boom Spews Toxic Air Emissions on Texas Residents). Public Lab researchers are attempting to innovate novel community based approaches to environmental health problems like hydrogen sulfide, so that communities and workers may begin not only developing systems to track their exposure, but also generating data and evidence in order to scientifically validate their experiences. The photopaper sensing tool is being developed to detect hydrogen sulfide in an affordable, quantifiable manner. In September of 2011, Public Laboratory members met with residents of Garfield County, Colorado to discuss the growing hydrogen sulfide problem in their small, rural community. The community had recently organized to take a gaseous grab sample from one resident’s kitchen sink. Analysis of the grab sample showed hydrogen sulfide levels of more than 185 times above the long-term exposure level recommended by the EPA (Gassed by Global Community Monitoring). The family, in which the son developed painful skin lesions and other symptoms coincident with this exposure, was forced to abandon the house. They are seeking legal assistance, but so far, neighboring gas development companies have denied association with the families water contamination. The grab sample, while able to capture one record of exposure, was costly (over $500) and had to be shipped to a lab in California within 24 hours in order to ensure the samples viability. The family did not hear results of the test for weeks, all the while continuing their exposure. Basic Information on Hydrogen Sulfide Hydrogen Sulfide Monitoring in Gas Patch: Background Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Development HistoryWe currently have two approaches to sensing hydrogen sulfide in development. First Prototype: Digital Sensor Our first prototype used a digital sensor for hydrogen sulfide. Advantages of this system is that data from the sensor could be logged over time and that tool is reusable and portable. However the Figaro TGS 825 sensor itself is relatively expensive--approximately $60 for an individual sensor and $40 in bulk.
Arduino and Industrial H2S Sensor More information on the digital sensor: Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor Arduino Patch for Detecting Hydrogen Sulfide Hydrogen Sulfide Detection for Fart Detector Second Prototype: Photographic Paper Our second prototype uses photographic paper to detect hydrogen sulfide. The silver halide in photographic paper tarnishes when exposed to H2S. The paper changes color inside the canisters depending on the level of H2S it has been exposed to, with darker strips indicating higher levels of exposure. This method is low-cost, easy to assemble using everyday materials, and may be more accessible to non-programmers.
Photographic Paper for H2S Sensing More information on the photographic paper: Hydrogen Sulfide Testing with Black and White Film Hydrogen Sulfide Tarnishing Silver Controlled Testing with B&W Film Hydrogen Sulfide Detectors Protocol This project is based on these two papers by geologist C. J. Horwell and colleagues that used photographic paper to measure hydrogen sulfide concentrations near volcanos in New Zealand. Horwell, C.J., Allen, A.G., Mather, T.A., Patterson, J.E., 2004. Evaluation of a simple passive sampling technique for monitoring volcanogenic hydrogen sulphide. J. Environ. Monitor. 6, 630 - 635. Horwell_JEM_2004_copy.pdf Horwell, C.J., Patterson, J.E., Gamble, J.A., Allen, A.G., 2005. Monitoring and mapping of hydrogen sulphide emissions across an active geothermal field: Rotorua, New Zealand. J. Volcanol. Geotherm. Res. 139, 259-269. Horwell_JVGR_2005_copy.pdf
Original photopaper map made by Horwell et al. Field Test SitesAztec, New Mexico
Map of area to be tested in Aztec, NM Choosing Test Sites in Aztec, NM Identifying Wells in Field and Experiment Design Collection and Processing of Aztec Test Strips Analyzed Results and Suggested New Steps for H2S Testing in Aztec, New Mexico New Experimental Design, Aztec, New Mexico New Container Tests, Aztec, New Mexico Designs for Next Round of Experiments, Aztec, New Mexico Wyoming
Results of the three rounds of testing in Deaver, WY Wyoming Hydrogen Sulfide Testing 2013-2014 How to make your own
Canisters in the process of being set up Below are resources for measuring H2S using photographic paper with silver halide based on research done at volcanoes. How to Guide: Short-term goals:
Start Contributing and Get involved!If you are interested in helping develop hydrogen sulfide sensing, please contribute thoughts, comments and research notes on this page as well as join us on the Public Lab mailing list. Currently active work on the film assay is being done at Northeastern University by Sara Wylie, Elisabeth Wilder, Deb Thomas, Cait Kennedy, Megan McLaughlin, and Hannah Gartner. Feel free to contact any of the people listed above if you are interested in getting more involved. You can also try following the prototype documentation to make your own film testing strips, and be sure to share any new tests sites or uses for this tool. This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section |
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| 57 | HannahJG |
June 16, 2014 13:49
| almost 10 years ago
PurposeHydrogen sulfide, which is a well documented but little understood health hazard, is one of the leading causes of injury in the workplace. Health issues have been clearly linked to H2S, and since 2011 the EPA has required the oil and gas to report their emissions to the Toxics Release Inventory (TRI). Despite this much hydrogen sulfide still gets into the air with little regulation (Fracking Boom Spews Toxic Air Emissions on Texas Residents). Public Lab researchers are attempting to innovate novel community based approaches to environmental health problems like hydrogen sulfide, so that communities and workers may begin not only developing systems to track their exposure, but also generating data and evidence in order to scientifically validate their experiences. The photopaper sensing tool is being developed to detect hydrogen sulfide in an affordable, quantifiable manner. In September of 2011, Public Laboratory members met with residents of Garfield County, Colorado to discuss the growing hydrogen sulfide problem in their small, rural community. The community had recently organized to take a gaseous grab sample from one resident’s kitchen sink. Analysis of the grab sample showed hydrogen sulfide levels of more than 185 times above the long-term exposure level recommended by the EPA (Gassed by Global Community Monitoring). The family, in which the son developed painful skin lesions and other symptoms coincident with this exposure, was forced to abandon the house. They are seeking legal assistance, but so far, neighboring gas development companies have denied association with the families water contamination. The grab sample, while able to capture one record of exposure, was costly (over $500) and had to be shipped to a lab in California within 24 hours in order to ensure the samples viability. The family did not hear results of the test for weeks, all the while continuing their exposure. Basic Information on Hydrogen Sulfide Hydrogen Sulfide Monitoring in Gas Patch: Background Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Development HistoryWe currently have two approaches to sensing hydrogen sulfide in development. First Prototype: Digital Sensor Our first prototype used a digital sensor for hydrogen sulfide. Advantages of this system is that data from the sensor could be logged over time and that tool is reusable and portable. However the Figaro TGS 825 sensor itself is relatively expensive--approximately $60 for an individual sensor and $40 in bulk.
More information on the digital sensor: Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor Arduino Patch for Detecting Hydrogen Sulfide Hydrogen Sulfide Detection for Fart Detector Second Prototype: Photographic Paper Our second prototype uses photographic paper to detect hydrogen sulfide. The silver halide in photographic paper tarnishes when exposed to H2S. The paper changes color inside the canisters depending on the level of H2S it has been exposed to, with darker strips indicating higher levels of exposure. This method is low-cost, easy to assemble using everyday materials, and may be more accessible to non-programmers.
More information on the photographic paper: Hydrogen Sulfide Testing with Black and White Film Hydrogen Sulfide Tarnishing Silver Controlled Testing with B&W Film Hydrogen Sulfide Detectors Protocol This project is based on these two papers by geologist C. J. Horwell and colleagues that used photographic paper to measure hydrogen sulfide concentrations near volcanos in New Zealand. Horwell, C.J., Allen, A.G., Mather, T.A., Patterson, J.E., 2004. Evaluation of a simple passive sampling technique for monitoring volcanogenic hydrogen sulphide. J. Environ. Monitor. 6, 630 - 635. Horwell_JEM_2004_copy.pdf Horwell, C.J., Patterson, J.E., Gamble, J.A., Allen, A.G., 2005. Monitoring and mapping of hydrogen sulphide emissions across an active geothermal field: Rotorua, New Zealand. J. Volcanol. Geotherm. Res. 139, 259-269. Horwell_JVGR_2005_copy.pdf
Field Test SitesAztec, New Mexico Choosing Test Sites in Aztec, NM Identifying Wells in Field and Experiment Design Collection and Processing of Aztec Test Strips Analyzed Results and Suggested New Steps for H2S Testing in Aztec, New Mexico New Experimental Design, Aztec, New Mexico New Container Tests, Aztec, New Mexico Designs for Next Round of Experiments, Aztec, New Mexico Wyoming
Wyoming Hydrogen Sulfide Testing 2013-2014 How to make your own
Below are resources for measuring H2S using photographic paper with silver halide based on research done at volcanoes. How to Guide: H2SphotopaperHowTo.doc Short-term goals:
Start Contributing and Get involved!If you are interested in helping develop hydrogen sulfide sensing, please contribute thoughts, comments and research notes on this page as well as join us on the Public Lab mailing list. Currently active work on the film assay is being done at Northeastern University by Sara Wylie, Elisabeth Wilder, Deb Thomas, Cait Kennedy, Megan McLaughlin, and Hannah Gartner. Feel free to contact any of the people listed above if you are interested in getting more involved. You can also try following the prototype documentation to make your own film testing strips, and be sure to share any new tests sites or uses for this tool. This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section |
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| 56 | ewilder |
June 16, 2014 03:12
| almost 10 years ago
PurposeHydrogen sulfide, which is a well documented but little understood health hazard, is one of the leading causes of injury in the workplace. Health issues have been clearly linked to H2S, and since 2011 the EPA has required the oil and gas to report their emissions to the Toxics Release Inventory (TRI). Despite this much hydrogen sulfide still gets into the air with little regulation (Fracking Boom Spews Toxic Air Emissions on Texas Residents). Public Lab researchers are attempting to innovate novel community based approaches to environmental health problems like hydrogen sulfide, so that communities and workers may begin not only developing systems to track their exposure, but also generating data and evidence in order to scientifically validate their experiences. The photopaper sensing tool is being developed to detect hydrogen sulfide in an affordable, quantifiable manner. In September of 2011, Public Laboratory members met with residents of Garfield County, Colorado to discuss the growing hydrogen sulfide problem in their small, rural community. The community had recently organized to take a gaseous grab sample from one resident’s kitchen sink. Analysis of the grab sample showed hydrogen sulfide levels of more than 185 times above the long-term exposure level recommended by the EPA (Gassed by Global Community Monitoring). The family, in which the son developed painful skin lesions and other symptoms coincident with this exposure, was forced to abandon the house. They are seeking legal assistance, but so far, neighboring gas development companies have denied association with the families water contamination. The grab sample, while able to capture one record of exposure, was costly (over $500) and had to be shipped to a lab in California within 24 hours in order to ensure the samples viability. The family did not hear results of the test for weeks, all the while continuing their exposure. Basic Information on Hydrogen Sulfide Hydrogen Sulfide Monitoring in Gas Patch: Background Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Development HistoryWe currently have two approaches to sensing hydrogen sulfide in development. First Prototype: Digital Sensor Our first prototype used a digital sensor for hydrogen sulfide. Advantages of this system is that data from the sensor could be logged over time and that tool is reusable and portable. However the Figaro TGS 825 sensor itself is relatively expensive--approximately $60 for an individual sensor and $40 in bulk.
Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor Arduino Patch for Detecting Hydrogen Sulfide Hydrogen Sulfide Detection for Fart Detector Second Prototype: Photographic Paper Our second prototype uses photographic paper to detect hydrogen sulfide. The silver halide in photographic paper tarnishes when exposed to H2S. The paper changes color inside the canisters depending on the level of H2S it has been exposed to, with darker strips indicating higher levels of exposure. This method is low-cost, easy to assemble using everyday materials, and may be more accessible to non-programmers.
Hydrogen Sulfide Testing with Black and White Film Hydrogen Sulfide Tarnishing Silver Controlled Testing with B&W Film Hydrogen Sulfide Detectors Research Notes Aztec, New Mexico Field Test
Choosing Test Sites in Aztec, NM Identifying Wells in Field and Experiment Design Collection and Processing of Aztec Test Strips Analyzed Results and Suggested New Steps for H2S Testing in Aztec, New Mexico New Experimental Design, Aztec, New Mexico New Container Tests, Aztec, New Mexico Designs for Next Round of Experiments, Aztec, New Mexico Wyoming Field Test
Wyoming Hydrogen Sulfide Testing 2013-2014 Inspiration This project is based on these two papers by geologist C. J. Horwell and colleagues that used photographic paper to measure hydrogen sulfide concentrations near volcanos in New Zealand. Horwell, C.J., Allen, A.G., Mather, T.A., Patterson, J.E., 2004. Evaluation of a simple passive sampling technique for monitoring volcanogenic hydrogen sulphide. J. Environ. Monitor. 6, 630 - 635. Horwell_JEM_2004_copy.pdf Horwell, C.J., Patterson, J.E., Gamble, J.A., Allen, A.G., 2005. Monitoring and mapping of hydrogen sulphide emissions across an active geothermal field: Rotorua, New Zealand. J. Volcanol. Geotherm. Res. 139, 259-269. Horwell_JVGR_2005_copy.pdf
How to make your own
Below are resources for measuring H2S using photographic paper with silver halide based on research done at volcanoes. How to Guide: H2SphotopaperHowTo.doc Short-term goals:
Start Contributing and Get involved!If you are interested in helping develop hydrogen sulfide sensing, please contribute thoughts, comments and research notes on this page as well as join us on the Public Lab mailing list. Currently active work on the film assay is being done at Northeastern University by Sara Wylie, Elisabeth Wilder, Deb Thomas, Cait Kennedy, Megan McLaughlin, and Hannah Gartner. Feel free to contact any of the people listed above if you are interested in getting more involved. You can also try following the prototype documentation to make your own film testing strips, and be sure to share any new tests sites or uses for this tool. This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section |
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| 55 | ewilder |
June 16, 2014 03:00
| almost 10 years ago
PurposeHydrogen sulfide, which is a well documented but little understood health hazard, is one of the leading causes of injury in the workplace. Health issues have been clearly linked to H2S, and since 2011 the EPA has required the oil and gas to report their emissions to the Toxics Release Inventory (TRI). Despite this much hydrogen sulfide still gets into the air with little regulation (Fracking Boom Spews Toxic Air Emissions on Texas Residents). Public Lab researchers are attempting to innovate novel community based approaches to environmental health problems like hydrogen sulfide, so that communities and workers may begin not only developing systems to track their exposure, but also generating data and evidence in order to scientifically validate their experiences. The photopaper sensing tool is being developed to detect hydrogen sulfide in an affordable, quantifiable manner. In September of 2011, Public Laboratory members met with residents of Garfield County, Colorado to discuss the growing hydrogen sulfide problem in their small, rural community. The community had recently organized to take a gaseous grab sample from one resident’s kitchen sink. Analysis of the grab sample showed hydrogen sulfide levels of more than 185 times above the long-term exposure level recommended by the EPA (Gassed by Global Community Monitoring). The family, in which the son developed painful skin lesions and other symptoms coincident with this exposure, was forced to abandon the house. They are seeking legal assistance, but so far, neighboring gas development companies have denied association with the families water contamination. The grab sample, while able to capture one record of exposure, was costly (over $500) and had to be shipped to a lab in California within 24 hours in order to ensure the samples viability. The family did not hear results of the test for weeks, all the while continuing their exposure. Basic Information on Hydrogen Sulfide Hydrogen Sulfide Monitoring in Gas Patch: Background Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Development HistoryWe currently have two approaches to sensing hydrogen sulfide in development. First Prototype: Digital Sensor Our first prototype used a digital sensor for hydrogen sulfide. Advantages of this system is that data from the sensor could be logged over time and that tool is reusable and portable. However the Figaro TGS 825 sensor itself is relatively expensive--approximately $60 for an individual sensor and $40 in bulk.
Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor Arduino Patch for Detecting Hydrogen Sulfide Hydrogen Sulfide Detection for Fart Detector Second Prototype: Photographic Paper Our second prototype uses photographic paper to detect hydrogen sulfide. The silver halide in photographic paper tarnishes when exposed to H2S. The paper changes color inside the canisters depending on the level of H2S it has been exposed to, with darker strips indicating higher levels of exposure. This method is low-cost and may be more accessible to non-programmers.
Hydrogen Sulfide Testing with Black and White Film Hydrogen Sulfide Tarnishing Silver Controlled Testing with B&W Film Hydrogen Sulfide Detectors Research Notes Aztec, New Mexico Field Test
Choosing Test Sites in Aztec, NM Identifying Wells in Field and Experiment Design Collection and Processing of Aztec Test Strips Analyzed Results and Suggested New Steps for H2S Testing in Aztec, New Mexico New Experimental Design, Aztec, New Mexico New Container Tests, Aztec, New Mexico Designs for Next Round of Experiments, Aztec, New Mexico Wyoming Field Test
Wyoming Hydrogen Sulfide Testing 2013-2014 Inspiration This project is based on these two papers by geologist C. J. Horwell and colleagues that used photographic paper to measure hydrogen sulfide concentrations near volcanos in New Zealand. Horwell, C.J., Allen, A.G., Mather, T.A., Patterson, J.E., 2004. Evaluation of a simple passive sampling technique for monitoring volcanogenic hydrogen sulphide. J. Environ. Monitor. 6, 630 - 635. Horwell_JEM_2004_copy.pdf Horwell, C.J., Patterson, J.E., Gamble, J.A., Allen, A.G., 2005. Monitoring and mapping of hydrogen sulphide emissions across an active geothermal field: Rotorua, New Zealand. J. Volcanol. Geotherm. Res. 139, 259-269. Horwell_JVGR_2005_copy.pdf
How to make your own
Below are resources for measuring H2S using photographic paper with silver halide based on research done at volcanoes. How to Guide: H2SphotopaperHowTo.doc Short-term goals:
Start Contributing and Get involved!If you are interested in helping develop hydrogen sulfide sensing, please contribute thoughts, comments and research notes on this page as well as join us on the Public Lab mailing list. Currently active work on the film assay is being done at Northeastern University by Sara Wylie, Elisabeth Wilder, Deb Thomas, Cait Kennedy, Megan McLaughlin, and Hannah Gartner. Feel free to contact any of the people listed above if you are interested in getting more involved. You can also try following the prototype documentation to make your own film testing strips, and be sure to share any new tests sites or uses for this tool. This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section |
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| 54 | ewilder |
June 16, 2014 02:55
| almost 10 years ago
PurposeHydrogen sulfide, which is a well documented but little understood health hazard, is one of the leading causes of injury in the workplace. Health issues have been clearly linked to H2S, and since 2011 the EPA has required the oil and gas to report their emissions to the Toxics Release Inventory (TRI). Despite this much hydrogen sulfide still gets into the air with little regulation (Fracking Boom Spews Toxic Air Emissions on Texas Residents). Public Lab researchers are attempting to innovate novel community based approaches to environmental health problems like hydrogen sulfide, so that communities and workers may begin not only developing systems to track their exposure, but also generating data and evidence in order to scientifically validate their experiences. The photopaper sensing tool is being developed to detect hydrogen sulfide in an affordable, quantifiable manner. In September of 2011, Public Laboratory members met with residents of Garfield County, Colorado to discuss the growing hydrogen sulfide problem in their small, rural community. The community had recently organized to take a gaseous grab sample from one resident’s kitchen sink. Analysis of the grab sample showed hydrogen sulfide levels of more than 185 times above the long-term exposure level recommended by the EPA (Gassed by Global Community Monitoring). The family, in which the son developed painful skin lesions and other symptoms coincident with this exposure, was forced to abandon the house. They are seeking legal assistance, but so far, neighboring gas development companies have denied association with the families water contamination. The grab sample, while able to capture one record of exposure, was costly (over $500) and had to be shipped to a lab in California within 24 hours in order to ensure the samples viability. The family did not hear results of the test for weeks, all the while continuing their exposure. Basic Information on Hydrogen Sulfide Hydrogen Sulfide Monitoring in Gas Patch: Background Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Development HistoryWe currently have two approaches to sensing hydrogen sulfide in Development. First Prototype: Digital Sensor Our first prototype used a digital sensor for hydrogen sulfide. Advantages of this system is that data from the sensor could be logged over time and that tool is reusable and portable. However the Figaro TGS 825 sensor itself is expensive approximately $60 for an individual sensor and $40 in bulk.
Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor Arduino Patch for Detecting Hydrogen Sulfide Hydrogen Sulfide Detection for Fart Detector Second Prototype: Photographic Paper Our second prototype uses photographic paper. The silver in photographic paper tarnishes with exposure to hydrogen sulfide. We are working on make a test for hydrogen sulfide using strips of photographic paper. We believe this test could be far more affordable than the digital version and accessible to non-programmers.
Hydrogen Sulfide Testing with Black and White Film Hydrogen Sulfide Tarnishing Silver Controlled Testing with B&W Film Hydrogen Sulfide Detectors Research Notes Aztec, New Mexico Field Test
Choosing Test Sites in Aztec, NM Identifying Wells in Field and Experiment Design Collection and Processing of Aztec Test Strips Analyzed Results and Suggested New Steps for H2S Testing in Aztec, New Mexico New Experimental Design, Aztec, New Mexico New Container Tests, Aztec, New Mexico Designs for Next Round of Experiments, Aztec, New Mexico Wyoming Field Test
Wyoming Hydrogen Sulfide Testing 2013-2014 Inspiration This project is based on these two papers by geologist C. J. Horwell and colleagues that used photographic paper to measure hydrogen sulfide concentrations near volcanos in New Zealand. Horwell, C.J., Allen, A.G., Mather, T.A., Patterson, J.E., 2004. Evaluation of a simple passive sampling technique for monitoring volcanogenic hydrogen sulphide. J. Environ. Monitor. 6, 630 - 635. Horwell_JEM_2004_copy.pdf Horwell, C.J., Patterson, J.E., Gamble, J.A., Allen, A.G., 2005. Monitoring and mapping of hydrogen sulphide emissions across an active geothermal field: Rotorua, New Zealand. J. Volcanol. Geotherm. Res. 139, 259-269. Horwell_JVGR_2005_copy.pdf
How to make your own
Below are resources for measuring H2S using photographic paper with silver halide based on research done at volcanoes. How to Guide: H2SphotopaperHowTo.doc Short-term goals:
Start Contributing and Get involved!If you are interested in helping develop hydrogen sulfide sensing, please contribute thoughts, comments and research notes on this page as well as join us on the Public Lab mailing list. Currently active work on the film assay is being done at Northeastern University by Sara Wylie, Elisabeth Wilder, Deb Thomas, Cait Kennedy, Megan McLaughlin, and Hannah Gartner. Feel free to contact any of the people listed above if you are interested in getting more involved. You can also try following the prototype documentation to make your own film testing strips, and be sure to share any new tests sites or uses for this tool. This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section |
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| 53 | HannahJG |
June 15, 2014 17:42
| almost 10 years ago
PurposeHydrogen sulfide, which is a well documented but little understood health hazard, is one of the leading causes of injury in the workplace. Health issues have been clearly linked to H2S, and since 2011 the EPA has required the oil and gas to report their emissions to the Toxics Release Inventory (TRI). Despite this much hydrogen sulfide still gets into the air with little regulation (Fracking Boom Spews Toxic Air Emissions on Texas Residents). Public Lab researchers are attempting to innovate novel community based approaches to environmental health problems like hydrogen sulfide, so that communities and workers may begin not only developing systems to track their exposure, but also generating data and evidence in order to scientifically validate their experiences. This tool is being developed to detect hydrogen sulfide in an affordable, quantifiable manner. In September of 2011, Public Laboratory members, met with residents of Garfield County, Colorado to discuss the growing hydrogen sulfide problem in their small, rural community. Recently, the community organized to take a gaseous grab sample from one resident’s kitchen sink. Analysis of the grab sample showed hydrogen sulfide levels of more than 185 times above the long-term exposure level recommended by the EPA (Gassed by Global Community Monitoring). The family, in which the son developed painful skin lesions and other symptoms coincident with this exposure, was forced to abandon the house. They are seeking legal assistance, but so far, neighboring gas development companies have denied association with the families water contamination. In this extreme case, the regulatory authorities were not able to act to support exposed individuals. The grab sample, while able to capture one record of exposure, was costly (over $500) and had to be shipped to a lab in California within 24 hours in order to ensure the samples viability. The family did not hear results of the test for weeks, all the while continuing their exposure. Basic Information on Hydrogen Sulfide Hydrogen Sulfide Monitoring in Gas Patch: Background Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Development HistoryWe currently have two approaches to sensing hydrogen sulfide in Development. First Prototype: Digital Sensor Our first prototype used a digital sensor for hydrogen sulfide. Advantages of this system is that data from the sensor could be logged over time and that tool is reusable and portable. However the Figaro TGS 825 sensor itself is expensive approximately $60 for an individual sensor and $40 in bulk.
Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor Arduino Patch for Detecting Hydrogen Sulfide Hydrogen Sulfide Detection for Fart Detector Second Prototype: Photographic Paper Our second prototype uses photographic paper. The silver in photographic paper tarnishes with exposure to hydrogen sulfide. We are working on make a test for hydrogen sulfide using strips of photographic paper. We believe this test could be far more affordable than the digital version and accessible to non-programmers.
Hydrogen Sulfide Testing with Black and White Film Hydrogen Sulfide Tarnishing Silver Controlled Testing with B&W Film Hydrogen Sulfide Detectors Research Notes Aztec, New Mexico Field Test
Choosing Test Sites in Aztec, NM Identifying Wells in Field and Experiment Design Collection and Processing of Aztec Test Strips Analyzed Results and Suggested New Steps for H2S Testing in Aztec, New Mexico New Experimental Design, Aztec, New Mexico New Container Tests, Aztec, New Mexico Designs for Next Round of Experiments, Aztec, New Mexico Wyoming Field Test
Wyoming Hydrogen Sulfide Testing 2013-2014 Inspiration This project is based on these two papers by geologist C. J. Horwell and colleagues that used photographic paper to measure hydrogen sulfide concentrations near volcanos in New Zealand. Horwell, C.J., Allen, A.G., Mather, T.A., Patterson, J.E., 2004. Evaluation of a simple passive sampling technique for monitoring volcanogenic hydrogen sulphide. J. Environ. Monitor. 6, 630 - 635. Horwell_JEM_2004_copy.pdf Horwell, C.J., Patterson, J.E., Gamble, J.A., Allen, A.G., 2005. Monitoring and mapping of hydrogen sulphide emissions across an active geothermal field: Rotorua, New Zealand. J. Volcanol. Geotherm. Res. 139, 259-269. Horwell_JVGR_2005_copy.pdf
How to make your own
Below are resources for measuring H2S using photographic paper with silver halide based on research done at volcanoes. How to Guide: H2SphotopaperHowTo.doc Short-term goals:
Start Contributing and Get involved!If you are interested in helping develop hydrogen sulfide sensing, please contribute thoughts, comments and research notes on this page as well as join us on the Public Lab mailing list. Currently active work on the film assay is being done at Northeastern University by Sara Wylie, Elisabeth Wilder, Deb Thomas, Cait Kennedy, Megan McLaughlin, and Hannah Gartner. Feel free to contact any of the people listed above if you are interested in getting more involved. You can also try following the prototype documentation to make your own film testing strips, and be sure to share any new tests sites or uses for this tool. This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section |
Revert | |
| 52 | HannahJG |
June 15, 2014 17:18
| almost 10 years ago
PurposeHydrogen sulfide, which is a well documented but little understood health hazard, is one of the leading causes of injury in the workplace. Health issues have been clearly linked to H2S, and since 2011 the EPA has required the oil and gas to report their emissions to the Toxics Release Inventory (TRI). Despite this much hydrogen sulfide still gets into the air with little regulation (Fracking Boom Spews Toxic Air Emissions on Texas Residents). Public Lab researchers are attempting to innovate novel community based approaches to environmental health problems like hydrogen sulfide, so that communities and workers may begin not only developing systems to track their exposure, but also generating data and evidence in order to scientifically validate their experiences. This tool is being developed to detect hydrogen sulfide in an affordable, quantifiable manner. In September of 2011, Public Laboratory members, met with residents of Garfield County, Colorado to discuss the growing hydrogen sulfide problem in their small, rural community. Recently, the community organized to take a gaseous grab sample from one resident’s kitchen sink. Analysis of the grab sample showed hydrogen sulfide levels of more than 185 times above the long-term exposure level recommended by the EPA (Gassed by Global Community Monitoring). The family, in which the son developed painful skin lesions and other symptoms coincident with this exposure, was forced to abandon the house. They are seeking legal assistance, but so far, neighboring gas development companies have denied association with the families water contamination. In this extreme case, the regulatory authorities were not able to act to support exposed individuals. The grab sample, while able to capture one record of exposure, was costly (over $500) and had to be shipped to a lab in California within 24 hours in order to ensure the samples viability. The family did not hear results of the test for weeks, all the while continuing their exposure. Basic Information on Hydrogen Sulfide Hydrogen Sulfide Monitoring in Gas Patch: Background Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Development HistoryWe currently have two approaches to sensing hydrogen sulfide in Development. First Prototype: Digital Sensor Our first prototype used a digital sensor for hydrogen sulfide. Advantages of this system is that data from the sensor could be logged over time and that tool is reusable and portable. However the Figaro TGS 825 sensor itself is expensive approximately $60 for an individual sensor and $40 in bulk. (does anyone have a link to buy one online?)
Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor Arduino Patch for Detecting Hydrogen Sulfide Hydrogen Sulfide Detection for Fart Detector Second Prototype: Photographic Paper Our second prototype uses photographic paper. The silver in photographic paper tarnishes with exposure to hydrogen sulfide. We are working on make a test for hydrogen sulfide using strips of photographic paper. We believe this test could be far more affordable than the digital version and accessible to non-programmers.
Hydrogen Sulfide Testing with Black and White Film Hydrogen Sulfide Tarnishing Silver Controlled Testing with B&W Film Hydrogen Sulfide Detectors Research Notes Aztec, New Mexico Field Test
Choosing Test Sites in Aztec, NM Identifying Wells in Field and Experiment Design Collection and Processing of Aztec Test Strips Analyzed Results and Suggested New Steps for H2S Testing in Aztec, New Mexico New Experimental Design, Aztec, New Mexico New Container Tests, Aztec, New Mexico Designs for Next Round of Experiments, Aztec, New Mexico Wyoming
Wyoming Hydrogen Sulfide Testing 2013-2014 Inspiration This project is based on these two papers by geologist C. J. Horwell and colleagues that used photographic paper to measure hydrogen sulfide concentrations near volcanos in New Zealand. Horwell, C.J., Allen, A.G., Mather, T.A., Patterson, J.E., 2004. Evaluation of a simple passive sampling technique for monitoring volcanogenic hydrogen sulphide. J. Environ. Monitor. 6, 630 - 635. Horwell_JEM_2004_copy.pdf Horwell, C.J., Patterson, J.E., Gamble, J.A., Allen, A.G., 2005. Monitoring and mapping of hydrogen sulphide emissions across an active geothermal field: Rotorua, New Zealand. J. Volcanol. Geotherm. Res. 139, 259-269. Horwell_JVGR_2005_copy.pdf
How to make your ownBoth of these tools are currently in the early stages of development, research notes can be found at the links below. There are two different tracks, one utilizing an industrial sensor with an arduino board and the other utilizing photographic paper with silver halide based on research done on H2S at volcanoes. How to Guide for Getting Started Short-term goals:
Start Contributing and Get involved!If you are interested in helping develop hydrogen sulfide sensing, please contribute thoughts, comments and research notes on this page as well as join us on the Public Lab mailing list. Currently active work on the film assay is being done at Northeastern University by Sara Wylie, Elisabeth Wilder, Deb Thomas, Cait Kennedy, Megan McLaughlin, and Hannah Gartner. Feel free to contact any of the people listed above if you are interested in getting more involved. You can also try following the prototype documentation to make your own film testing strips, and be sure to share any new tests sites or uses for this tool. s This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section |
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| 51 | HannahJG |
June 15, 2014 16:30
| almost 10 years ago
PurposeHydrogen sulfide, which is a well documented but little understood health hazard, is one of the leading causes of injury in the workplace. Health issues have been clearly linked to H2S, and since 2011 the EPA has required the oil and gas to report their emissions to the Toxics Release Inventory (TRI). Despite this much hydrogen sulfide still gets into the air with little regulation (Fracking Boom Spews Toxic Air Emissions on Texas Residents). Public Lab researchers are attempting to innovate novel community based approaches to environmental health problems like hydrogen sulfide, so that communities and workers may begin not only developing systems to track their exposure, but also generating data and evidence in order to scientifically validate their experiences. This tool is being developed to detect hydrogen sulfide in an affordable, quantifiable manner. In September of 2011, Public Laboratory members, met with residents of Garfield County, Colorado to discuss the growing hydrogen sulfide problem in their small, rural community. Recently, the community organized to take a gaseous grab sample from one resident’s kitchen sink. Analysis of the grab sample showed hydrogen sulfide levels of more than 185 times above the long-term exposure level recommended by the EPA (Gassed by Global Community Monitoring). The family, in which the son developed painful skin lesions and other symptoms coincident with this exposure, was forced to abandon the house. They are seeking legal assistance, but so far, neighboring gas development companies have denied association with the families water contamination. In this extreme case, the regulatory authorities were not able to act to support exposed individuals. The grab sample, while able to capture one record of exposure, was costly (over $500) and had to be shipped to a lab in California within 24 hours in order to ensure the samples viability. The family did not hear results of the test for weeks, all the while continuing their exposure. Basic Information on Hydrogen Sulfide Hydrogen Sulfide Monitoring in Gas Patch: Background Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Development HistoryWe currently have two approaches to sensing hydrogen sulfide in Development. First Prototype: Digital Sensor Our first prototype used a digital sensor for hydrogen sulfide. Advantages of this system is that data from the sensor could be logged over time and that tool is reusable and portable. However the Figaro TGS 825 sensor itself is expensive approximately $60 for an individual sensor and $40 in bulk. (does anyone have a link to buy one online?)
Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor Arduino Patch for Detecting Hydrogen Sulfide Hydrogen Sulfide Detection for Fart Detector Second Prototype: Photographic Paper Our second prototype uses photographic paper. The silver in photographic paper tarnishes with exposure to hydrogen sulfide. We are working on make a test for hydrogen sulfide using strips of photographic paper. We believe this test could be far more affordable than the digital version and accessible to non-programmers.
Hydrogen Sulfide Testing with Black and White Film Hydrogen Sulfide Tarnishing Silver Controlled Testing with B&W Film Hydrogen Sulfide Detectors Research Notes Aztec, New Mexico Field Test
Choosing Test Sites in Aztec, NM Identifying Wells in Field and Experiment Design Collection and Processing of Aztec Test Strips Analyzed Results and Suggested New Steps for H2S Testing in Aztec, New Mexico New Experimental Design, Aztec, New Mexico New Container Tests, Aztec, New Mexico Designs for Next Round of Experiments, Aztec, New Mexico Wyoming
Wyoming Hydrogen Sulfide Testing 2013-2014 Inspiration This project is based on these two papers by geologist C. J. Horwell and colleagues that used photographic paper to measure hydrogen sulfide concentrations near volcanos in New Zealand. Horwell, C.J., Allen, A.G., Mather, T.A., Patterson, J.E., 2004. Evaluation of a simple passive sampling technique for monitoring volcanogenic hydrogen sulphide. J. Environ. Monitor. 6, 630 - 635. Horwell_JEM_2004_copy.pdf Horwell, C.J., Patterson, J.E., Gamble, J.A., Allen, A.G., 2005. Monitoring and mapping of hydrogen sulphide emissions across an active geothermal field: Rotorua, New Zealand. J. Volcanol. Geotherm. Res. 139, 259-269. Horwell_JVGR_2005_copy.pdf
How to make your ownBoth of these tools are currently in the early stages of development, research notes can be found at the links below. There are two different tracks, one utilizing an industrial sensor with an arduino board and the other utilizing photographic paper with silver halide based on research done on H2S at volcanoes. How to Guide for Getting Started Get involved!If you are interested in helping develop hydrogen sulfide sensing, please contribute thoughts, comments and research notes on this page as well as join us on the Public Lab mailing list.
Short-term goals:
Places to start contributing:If you're interested in getting involved you could try following the prototype documentation to make your own film testing strips. We can always use help in researching and documenting hydrogen sulfide health issues. Also perhaps you know of site to test or use this tool? This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section |
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| 50 | HannahJG |
June 15, 2014 16:26
| almost 10 years ago
PurposeHydrogen sulfide, which is a well documented but little understood health hazard, is one of the leading causes of injury in the workplace. Health issues have been clearly linked to H2S, and since 2011 the EPA has required the oil and gas to report their emissions to the Toxics Release Inventory (TRI). Despite this much hydrogen sulfide still gets into the air with little regulation (Fracking Boom Spews Toxic Air Emissions on Texas Residents). Public Lab researchers are attempting to innovate novel community based approaches to environmental health problems like hydrogen sulfide, so that communities and workers may begin not only developing systems to track their exposure, but also generating data and evidence in order to scientifically validate their experiences. This tool is being developed to detect hydrogen sulfide in an affordable, quantifiable manner. In September of 2011, Public Laboratory members, met with residents of Garfield County, Colorado to discuss the growing hydrogen sulfide problem in their small, rural community. Recently, the community organized to take a gaseous grab sample from one resident’s kitchen sink. Analysis of the grab sample showed hydrogen sulfide levels of more than 185 times above the long-term exposure level recommended by the EPA (Gassed by Global Community Monitoring). The family, in which the son developed painful skin lesions and other symptoms coincident with this exposure, was forced to abandon the house. They are seeking legal assistance, but so far, neighboring gas development companies have denied association with the families water contamination. In this extreme case, the regulatory authorities were not able to act to support exposed individuals. The grab sample, while able to capture one record of exposure, was costly (over $500) and had to be shipped to a lab in California within 24 hours in order to ensure the samples viability. The family did not hear results of the test for weeks, all the while continuing their exposure. Basic Information on Hydrogen Sulfide Hydrogen Sulfide Monitoring in Gas Patch: Background Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Development HistoryWe currently have two approaches to sensing hydrogen sulfide in Development. First Prototype: Digital Sensor Our first prototype used a digital sensor for hydrogen sulfide. Advantages of this system is that data from the sensor could be logged over time and that tool is reusable and portable. However the Figaro TGS 825 sensor itself is expensive approximately $60 for an individual sensor and $40 in bulk. (does anyone have a link to buy one online?)
Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor Arduino Patch for Detecting Hydrogen Sulfide Hydrogen Sulfide Detection for Fart Detector Second Prototype: Photographic Paper Our second prototype uses photographic paper. The silver in photographic paper tarnishes with exposure to hydrogen sulfide. We are working on make a test for hydrogen sulfide using strips of photographic paper. We believe this test could be far more affordable than the digital version and accessible to non-programmers.
Hydrogen Sulfide Testing with Black and White Film Hydrogen Sulfide Tarnishing Silver Controlled Testing with B&W Film Hydrogen Sulfide Detectors Research Notes Aztec, New Mexico Field Test
Choosing Test Sites in Aztec, NM Identifying Wells in Field and Experiment Design Collection and Processing of Aztec Test Strips Analyzed Results and Suggested New Steps for H2S Testing in Aztec, New Mexico New Experimental Design, Aztec, New Mexico New Container Tests, Aztec, New Mexico Designs for Next Round of Experiments, Aztec, New Mexico Wyoming Wyoming Hydrogen Sulfide Testing 2013-2014 Inspiration This project is based on these two papers by geologist C. J. Horwell and colleagues that used photographic paper to measure hydrogen sulfide concentrations near volcanos in New Zealand. Horwell, C.J., Allen, A.G., Mather, T.A., Patterson, J.E., 2004. Evaluation of a simple passive sampling technique for monitoring volcanogenic hydrogen sulphide. J. Environ. Monitor. 6, 630 - 635. Horwell_JEM_2004_copy.pdf Horwell, C.J., Patterson, J.E., Gamble, J.A., Allen, A.G., 2005. Monitoring and mapping of hydrogen sulphide emissions across an active geothermal field: Rotorua, New Zealand. J. Volcanol. Geotherm. Res. 139, 259-269. Horwell_JVGR_2005_copy.pdf
How to make your ownBoth of these tools are currently in the early stages of development, research notes can be found at the links below. There are two different tracks, one utilizing an industrial sensor with an arduino board and the other utilizing photographic paper with silver halide based on research done on H2S at volcanoes. How to Guide for Getting Started Get involved!If you are interested in helping develop hydrogen sulfide sensing, please contribute thoughts, comments and research notes on this page as well as join us on the Public Lab mailing list.
Short-term goals:
Places to start contributing:If you're interested in getting involved you could try following the prototype documentation to make your own film testing strips. We can always use help in researching and documenting hydrogen sulfide health issues. Also perhaps you know of site to test or use this tool? This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section |
Revert | |
| 49 | HannahJG |
June 15, 2014 13:34
| almost 10 years ago
PurposeHydrogen sulfide, which is a well documented but little understood health hazard, is one of the leading causes of injury in the workplace. Although health issues have been clearly linked with the gas, increasing regulation has been difficult since the oil and gas industries are exempt from many federal laws. Public Lab researchers are attempting to innovate novel community based approaches to environmental health problems like hydrogen sulfide, so that communities and workers may begin not only developing systems to track their exposure, but also generating data and evidence in order to scientifically validate their experiences. This tool is being developed to detect hydrogen sulfide in an affordable, quantifiable manner. In September of 2011, Public Laboratory members, met with residents of Garfield County, Colorado to discuss the growing hydrogen sulfide problem in their small, rural community. Recently, the community organized to take a gaseous grab sample from one resident’s kitchen sink. Analysis of the grab sample showed hydrogen sulfide levels of more than 185 times above the long-term exposure level recommended by the EPA (Gassed by Global Community Monitoring). The family, in which the son developed painful skin lesions and other symptoms coincident with this exposure, was forced to abandon the house. They are seeking legal assistance, but so far, neighboring gas development companies have denied association with the families water contamination. In this extreme case, the regulatory authorities were not able to act to support exposed individuals. The grab sample, while able to capture one record of exposure, was costly (over $500) and had to be shipped to a lab in California within 24 hours in order to ensure the samples viability. The family did not hear results of the test for weeks, all the while continuing their exposure. Basic Information on Hydrogen Sulfide Hydrogen Sulfide Monitoring in Gas Patch: Background Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Development HistoryWe currently have two approaches to sensing hydrogen sulfide in Development. First Prototype: Digital Sensor Our first prototype used a digital sensor for hydrogen sulfide. Advantages of this system is that data from the sensor could be logged over time and that tool is reusable and portable. However the Figaro TGS 825 sensor itself is expensive approximately $60 for an individual sensor and $40 in bulk. (does anyone have a link to buy one online?)
Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor Arduino Patch for Detecting Hydrogen Sulfide Hydrogen Sulfide Detection for Fart Detector Second Prototype: Photographic Paper Our second prototype uses photographic paper. The silver in photographic paper tarnishes with exposure to hydrogen sulfide. We are working on make a test for hydrogen sulfide using strips of photographic paper. We believe this test could be far more affordable than the digital version and accessible to non-programmers.
Hydrogen Sulfide Testing with Black and White Film Hydrogen Sulfide Tarnishing Silver Controlled Testing with B&W Film Hydrogen Sulfide Detectors Research Notes Aztec, New Mexico Field Test
Choosing Test Sites in Aztec, NM Identifying Wells in Field and Experiment Design Collection and Processing of Aztec Test Strips Analyzed Results and Suggested New Steps for H2S Testing in Aztec, New Mexico New Experimental Design, Aztec, New Mexico New Container Tests, Aztec, New Mexico Designs for Next Round of Experiments, Aztec, New Mexico Wyoming Wyoming Hydrogen Sulfide Testing 2013-2014 Inspiration This project is based on these two papers by geologist C. J. Horwell and colleagues that used photographic paper to measure hydrogen sulfide concentrations near volcanos in New Zealand. Horwell, C.J., Allen, A.G., Mather, T.A., Patterson, J.E., 2004. Evaluation of a simple passive sampling technique for monitoring volcanogenic hydrogen sulphide. J. Environ. Monitor. 6, 630 - 635. Horwell_JEM_2004_copy.pdf Horwell, C.J., Patterson, J.E., Gamble, J.A., Allen, A.G., 2005. Monitoring and mapping of hydrogen sulphide emissions across an active geothermal field: Rotorua, New Zealand. J. Volcanol. Geotherm. Res. 139, 259-269. Horwell_JVGR_2005_copy.pdf
How to make your ownBoth of these tools are currently in the early stages of development, research notes can be found at the links below. There are two different tracks, one utilizing an industrial sensor with an arduino board and the other utilizing photographic paper with silver halide based on research done on H2S at volcanoes. How to Guide for Getting Started Get involved!If you are interested in helping develop hydrogen sulfide sensing, please contribute thoughts, comments and research notes on this page as well as join us on the Public Lab mailing list.
Short-term goals:
Places to start contributing:If you're interested in getting involved you could try following the prototype documentation to make your own film testing strips. We can always use help in researching and documenting hydrogen sulfide health issues. Also perhaps you know of site to test or use this tool? This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section |
Revert | |
| 48 | HannahJG |
June 15, 2014 13:31
| almost 10 years ago
PurposeHydrogen sulfide, which is a well documented but little understood health hazard, is one of the leading causes of injury in the workplace. Although health issues have been clearly linked with the gas, increasing regulation has been difficult since the oil and gas industries are exempt from many federal laws. Public Lab researchers are attempting to innovate novel community based approaches to environmental health problems like hydrogen sulfide, so that communities and workers may begin not only developing systems to track their exposure, but also generating data and evidence in order to scientifically validate their experiences. This tool is being developed to detect hydrogen sulfide in an affordable, quantifiable manner. In September of 2011, Public Laboratory members, met with residents of Garfield County, Colorado to discuss the growing hydrogen sulfide problem in their small, rural community. Recently, the community organized to take a gaseous grab sample from one resident’s kitchen sink. Analysis of the grab sample showed hydrogen sulfide levels of more than 185 times above the long-term exposure level recommended by the EPA (Gassed by Global Community Monitoring). The family, in which the son developed painful skin lesions and other symptoms coincident with this exposure, was forced to abandon the house. They are seeking legal assistance, but so far, neighboring gas development companies have denied association with the families water contamination. In this extreme case, the regulatory authorities were not able to act to support exposed individuals. The grab sample, while able to capture one record of exposure, was costly (over $500) and had to be shipped to a lab in California within 24 hours in order to ensure the samples viability. The family did not hear results of the test for weeks, all the while continuing their exposure. Basic Information on Hydrogen Sulfide Hydrogen Sulfide Monitoring in Gas Patch: Background Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Development HistoryWe currently have two approaches to sensing hydrogen sulfide in Development. First Prototype: Digital Sensor Our first prototype used a digital sensor for hydrogen sulfide. Advantages of this system is that data from the sensor could be logged over time and that tool is reusable and portable. However the Figaro TGS 825 sensor itself is expensive approximately $60 for an individual sensor and $40 in bulk. (does anyone have a link to buy one online?)
Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor Arduino Patch for Detecting Hydrogen Sulfide Hydrogen Sulfide Detection for Fart Detector Second Prototype: Photographic Paper Our second prototype uses photographic paper. The silver in photographic paper tarnishes with exposure to hydrogen sulfide. We are working on make a test for hydrogen sulfide using strips of photographic paper. We believe this test could be far more affordable than the digital version and accessible to non-programmers.
Hydrogen Sulfide Testing with Black and White Film Hydrogen Sulfide Tarnishing Silver Controlled Testing with B&W Film Hydrogen Sulfide Detectors Research Notes Aztec, New Mexico Field Test
Choosing Test Sites in Aztec, NM Identifying Wells in Field and Experiment Design Collection and Processing of Aztec Test Strips Analyzed Results and Suggested New Steps for H2S Testing in Aztec, New Mexico New Experimental Design, Aztec, New Mexico New Container Tests, Aztec, New Mexico Designs for Next Round of Experiments, Aztec, New Mexico Wyoming Wyoming Hydrogen Sulfide Testing 2013-2014 Inspiration This project is based on these two papers by geologist C. J. Horwell and colleagues that used photographic paper to measure hydrogen sulfide concentrations near volcanos in New Zealand. Horwell, C.J., Allen, A.G., Mather, T.A., Patterson, J.E., 2004. Evaluation of a simple passive sampling technique for monitoring volcanogenic hydrogen sulphide. J. Environ. Monitor. 6, 630 - 635. Horwell_JEM_2004_copy.pdf Horwell, C.J., Patterson, J.E., Gamble, J.A., Allen, A.G., 2005. Monitoring and mapping of hydrogen sulphide emissions across an active geothermal field: Rotorua, New Zealand. J. Volcanol. Geotherm. Res. 139, 259-269. Horwell_JVGR_2005_copy.pdf
How to make your ownBoth of these tools are currently in the early stages of development, research notes can be found at the links below. There are two different tracks, one utilizing an industrial sensor with an arduino board and the other utilizing photographic paper with silver halide based on research done on H2S at volcanoes. How to Guide for Getting Started Get involved!If you are interested in helping develop hydrogen sulfide sensing, please contribute thoughts, comments and research notes on this page as well as join us on the Public Lab mailing list.
Short-term goals:
Places to start contributing:If you're interested in getting involved you could try following the prototype documentation to make your own film testing strips. We can always use help in researching and documenting hydrogen sulfide health issues. Also perhaps you know of site to test or use this tool? This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section |
Revert | |
| 47 | HannahJG |
June 15, 2014 13:30
| almost 10 years ago
PurposeHydrogen sulfide, which is a well documented but little understood health hazard, is one of the leading causes of injury in the workplace. Although health issues have been clearly linked with the gas, increasing regulation has been difficult since the oil and gas industries are exempt from many federal laws. Public Lab researchers are attempting to innovate novel community based approaches to environmental health problems like hydrogen sulfide, so that communities and workers may begin not only developing systems to track their exposure, but also generating data and evidence in order to scientifically validate their experiences. This tool is being developed to detect hydrogen sulfide in an affordable, quantifiable manner. In September of 2011, Public Laboratory members, met with residents of Garfield County, Colorado to discuss the growing hydrogen sulfide problem in their small, rural community. Recently, the community organized to take a gaseous grab sample from one resident’s kitchen sink. Analysis of the grab sample showed hydrogen sulfide levels of more than 185 times above the long-term exposure level recommended by the EPA (Gassed by Global Community Monitoring). The family, in which the son developed painful skin lesions and other symptoms coincident with this exposure, was forced to abandon the house. They are seeking legal assistance, but so far, neighboring gas development companies have denied association with the families water contamination. In this extreme case, the regulatory authorities were not able to act to support exposed individuals. The grab sample, while able to capture one record of exposure, was costly (over $500) and had to be shipped to a lab in California within 24 hours in order to ensure the samples viability. The family did not hear results of the test for weeks, all the while continuing their exposure. Basic Information on Hydrogen Sulfide Hydrogen Sulfide Monitoring in Gas Patch: Background Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Development HistoryWe currently have two approaches to sensing hydrogen sulfide in Development. First Prototype: Digital Sensor Our first prototype used a digital sensor for hydrogen sulfide. Advantages of this system is that data from the sensor could be logged over time and that tool is reusable and portable. However the Figaro TGS 825 sensor itself is expensive approximately $60 for an individual sensor and $40 in bulk. (does anyone have a link to buy one online?)
Arduino and Industrial H2S Sensor Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor Arduino Patch for Detecting Hydrogen Sulfide Hydrogen Sulfide Detection for Fart Detector Second Prototype: Photographic Paper Our second prototype uses photographic paper. The silver in photographic paper tarnishes with exposure to hydrogen sulfide. We are working on make a test for hydrogen sulfide using strips of photographic paper. We believe this test could be far more affordable than the digital version and accessible to non-programmers.
Photographic Paper for H2S Sensing Hydrogen Sulfide Testing with Black and White Film Hydrogen Sulfide Tarnishing Silver Controlled Testing with B&W Film Hydrogen Sulfide Detectors Research Notes Aztec, New Mexico Field Test
Choosing Test Sites in Aztec, NM Identifying Wells in Field and Experiment Design Collection and Processing of Aztec Test Strips Analyzed Results and Suggested New Steps for H2S Testing in Aztec, New Mexico New Experimental Design, Aztec, New Mexico New Container Tests, Aztec, New Mexico Designs for Next Round of Experiments, Aztec, New Mexico Wyoming Wyoming Hydrogen Sulfide Testing 2013-2014 Inspiration This project is based on these two papers by geologist C. J. Horwell and colleagues that used photographic paper to measure hydrogen sulfide concentrations near volcanos in New Zealand. Horwell, C.J., Allen, A.G., Mather, T.A., Patterson, J.E., 2004. Evaluation of a simple passive sampling technique for monitoring volcanogenic hydrogen sulphide. J. Environ. Monitor. 6, 630 - 635. Horwell_JEM_2004_copy.pdf Horwell, C.J., Patterson, J.E., Gamble, J.A., Allen, A.G., 2005. Monitoring and mapping of hydrogen sulphide emissions across an active geothermal field: Rotorua, New Zealand. J. Volcanol. Geotherm. Res. 139, 259-269. Horwell_JVGR_2005_copy.pdf
How to make your ownBoth of these tools are currently in the early stages of development, research notes can be found at the links below. There are two different tracks, one utilizing an industrial sensor with an arduino board and the other utilizing photographic paper with silver halide based on research done on H2S at volcanoes. How to Guide for Getting Started Get involved!If you are interested in helping develop hydrogen sulfide sensing, please contribute thoughts, comments and research notes on this page as well as join us on the Public Lab mailing list.
Short-term goals:
Places to start contributing:If you're interested in getting involved you could try following the prototype documentation to make your own film testing strips. We can always use help in researching and documenting hydrogen sulfide health issues. Also perhaps you know of site to test or use this tool? This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section |
Revert | |
| 46 | HannahJG |
June 15, 2014 13:28
| almost 10 years ago
PurposeHydrogen sulfide, which is a well documented but little understood health hazard, is one of the leading causes of injury in the workplace. Although health issues have been clearly linked with the gas, increasing regulation has been difficult since the oil and gas industries are exempt from many federal laws. Public Lab researchers are attempting to innovate novel community based approaches to environmental health problems like hydrogen sulfide, so that communities and workers may begin not only developing systems to track their exposure, but also generating data and evidence in order to scientifically validate their experiences. This tool is being developed to detect hydrogen sulfide in an affordable, quantifiable manner. In September of 2011, Public Laboratory members, met with residents of Garfield County, Colorado to discuss the growing hydrogen sulfide problem in their small, rural community. Recently, the community organized to take a gaseous grab sample from one resident’s kitchen sink. Analysis of the grab sample showed hydrogen sulfide levels of more than 185 times above the long-term exposure level recommended by the EPA (Gassed by Global Community Monitoring). The family, in which the son developed painful skin lesions and other symptoms coincident with this exposure, was forced to abandon the house. They are seeking legal assistance, but so far, neighboring gas development companies have denied association with the families water contamination. In this extreme case, the regulatory authorities were not able to act to support exposed individuals. The grab sample, while able to capture one record of exposure, was costly (over $500) and had to be shipped to a lab in California within 24 hours in order to ensure the samples viability. The family did not hear results of the test for weeks, all the while continuing their exposure. Basic Information on Hydrogen Sulfide Hydrogen Sulfide Monitoring in Gas Patch: Background Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Development HistoryWe currently have two approaches to sensing hydrogen sulfide in Development. First Prototype: Digital Sensor Our first prototype used a digital sensor for hydrogen sulfide. Advantages of this system is that data from the sensor could be logged over time and that tool is reusable and portable. However the Figaro TGS 825 sensor itself is expensive approximately $60 for an individual sensor and $40 in bulk. (does anyone have a link to buy one online?)
Arduino and Industrial H2S Sensor Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor Arduino Patch for Detecting Hydrogen Sulfide Hydrogen Sulfide Detection for Fart Detector Second Prototype: Photographic Paper Our second prototype uses photographic paper. The silver in photographic paper tarnishes with exposure to hydrogen sulfide. We are working on make a test for hydrogen sulfide using strips of photographic paper. We believe this test could be far more affordable than the digital version and accessible to non-programmers.
Photographic Paper for H2S Sensing Hydrogen Sulfide Testing with Black and White Film Hydrogen Sulfide Tarnishing Silver Controlled Testing with B&W Film Hydrogen Sulfide Detectors Research Notes Aztec, New Mexico Field Test
Choosing Test Sites in Aztec, NM Identifying Wells in Field and Experiment Design Collection and Processing of Aztec Test Strips Analyzed Results and Suggested New Steps for H2S Testing in Aztec, New Mexico New Experimental Design, Aztec, New Mexico New Container Tests, Aztec, New Mexico Designs for Next Round of Experiments, Aztec, New Mexico Wyoming Wyoming Hydrogen Sulfide Testing 2013-2014 Inspiration This project is based on these two papers by geologist C. J. Horwell and colleagues that used photographic paper to measure hydrogen sulfide concentrations near volcanos in New Zealand. Horwell, C.J., Allen, A.G., Mather, T.A., Patterson, J.E., 2004. Evaluation of a simple passive sampling technique for monitoring volcanogenic hydrogen sulphide. J. Environ. Monitor. 6, 630 - 635. Horwell_JEM_2004_copy.pdf Horwell, C.J., Patterson, J.E., Gamble, J.A., Allen, A.G., 2005. Monitoring and mapping of hydrogen sulphide emissions across an active geothermal field: Rotorua, New Zealand. J. Volcanol. Geotherm. Res. 139, 259-269. Horwell_JVGR_2005_copy.pdf
Original photopaper map made by Horwell et. al. How to make your ownBoth of these tools are currently in the early stages of development, research notes can be found at the links below. There are two different tracks, one utilizing an industrial sensor with an arduino board and the other utilizing photographic paper with silver halide based on research done on H2S at volcanoes. How to Guide for Getting Started Get involved!If you are interested in helping develop hydrogen sulfide sensing, please contribute thoughts, comments and research notes on this page as well as join us on the Public Lab mailing list.
Short-term goals:
Places to start contributing:If you're interested in getting involved you could try following the prototype documentation to make your own film testing strips. We can always use help in researching and documenting hydrogen sulfide health issues. Also perhaps you know of site to test or use this tool? This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section |
Revert | |
| 45 | HannahJG |
June 14, 2014 15:54
| almost 10 years ago
PurposeHydrogen sulfide, which is a well documented but little understood health hazard, is one of the leading causes of injury in the workplace. Although health issues have been clearly linked with the gas, increasing regulation has been difficult since the oil and gas industries are exempt from many federal laws. Public Lab researchers are attempting to innovate novel community based approaches to environmental health problems like hydrogen sulfide, so that communities and workers may begin not only developing systems to track their exposure, but also generating data and evidence in order to scientifically validate their experiences. This tool is being developed to detect hydrogen sulfide in an affordable, quantifiable manner. In September of 2011, Public Laboratory members, met with residents of Garfield County, Colorado to discuss the growing hydrogen sulfide problem in their small, rural community. Recently, the community organized to take a gaseous grab sample from one resident’s kitchen sink. Analysis of the grab sample showed hydrogen sulfide levels of more than 185 times above the long-term exposure level recommended by the EPA (Gassed by Global Community Monitoring). The family, in which the son developed painful skin lesions and other symptoms coincident with this exposure, was forced to abandon the house. They are seeking legal assistance, but so far, neighboring gas development companies have denied association with the families water contamination. In this extreme case, the regulatory authorities were not able to act to support exposed individuals. The grab sample, while able to capture one record of exposure, was costly (over $500) and had to be shipped to a lab in California within 24 hours in order to ensure the samples viability. The family did not hear results of the test for weeks, all the while continuing their exposure. Basic Information on Hydrogen Sulfide Hydrogen Sulfide Monitoring in Gas Patch: Background Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Development HistoryWe currently have two approaches to sensing hydrogen sulfide in Development. First Prototype: Digital Sensor Our first prototype used a digital sensor for hydrogen sulfide. Advantages of this system is that data from the sensor could be logged over time and that tool is reusable and portable. However the Figaro TGS 825 sensor itself is expensive approximately $60 for an individual sensor and $40 in bulk. (does anyone have a link to buy one online?)
Arduino and Industrial H2S Sensor Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor Arduino Patch for Detecting Hydrogen Sulfide Hydrogen Sulfide Detection for Fart Detector Second Prototype: Photographic Paper Our second prototype uses photographic paper. The silver in photographic paper tarnishes with exposure to hydrogen sulfide. We are working on make a test for hydrogen sulfide using strips of photographic paper. We believe this test could be far more affordable than the digital version and accessible to non-programmers.
Photographic Paper for H2S Sensing Hydrogen Sulfide Testing with Black and White Film Hydrogen Sulfide Tarnishing Silver Controlled Testing with B&W Film Hydrogen Sulfide Detectors MSDS sheet for Kodak Photo Flo Inspriation This project is based on these two papers by geologist C. J. Horwell and colleagues that measured hydrogen sulfide concentrations near a volcano in New Zealand. Horwell, C.J., Allen, A.G., Mather, T.A., Patterson, J.E., 2004. Evaluation of a simple passive sampling technique for monitoring volcanogenic hydrogen sulphide. J. Environ. Monitor. 6, 630 - 635. Horwell_JEM_2004_copy.pdf Horwell, C.J., Patterson, J.E., Gamble, J.A., Allen, A.G., 2005. Monitoring and mapping of hydrogen sulphide emissions across an active geothermal field: Rotorua, New Zealand. J. Volcanol. Geotherm. Res. 139, 259-269. Horwell_JVGR_2005_copy.pdf
Original photopaper map made by Horwell et. al. How to make your ownBoth of these tools are currently in the early stages of development, research notes can be found at the links below. There are two different tracks, one utilizing an industrial sensor with an arduino board and the other utilizing photographic paper with silver halide based on research done on H2S at volcanoes. How to Guide for Getting Started Get involved!If you are interested in helping develop hydrogen sulfide sensing, please contribute thoughts, comments and research notes on this page as well as join us on the Public Lab mailing list.
Short-term goals:
Places to start contributing:If you're interested in getting involved you could try following the prototype documentation to make your own film testing strips. We can always use help in researching and documenting hydrogen sulfide health issues. Also perhaps you know of site to test or use this tool? This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section |
Revert | |
| 44 | HannahJG |
June 14, 2014 15:52
| almost 10 years ago
PurposeHydrogen sulfide, which is a well documented but little understood health hazard, is one of the leading causes of injury in the workplace. Although health issues have been clearly linked with the gas, increasing regulation has been difficult since the oil and gas industries are exempt from many federal laws. Public Lab researchers are attempting to innovate novel community based approaches to environmental health problems like hydrogen sulfide, so that communities and workers may begin not only developing systems to track their exposure, but also generating data and evidence in order to scientifically validate their experiences. This tool is being developed to detect hydrogen sulfide in an affordable, quantifiable manner. In September of 2011, Public Laboratory members, met with residents of Garfield County, Colorado to discuss the growing hydrogen sulfide problem in their small, rural community. Recently, the community organized to take a gaseous grab sample from one resident’s kitchen sink. Analysis of the grab sample showed hydrogen sulfide levels of more than 185 times above the long-term exposure level recommended by the EPA (Gassed by Global Community Monitoring). The family, in which the son developed painful skin lesions and other symptoms coincident with this exposure, was forced to abandon the house. They are seeking legal assistance, but so far, neighboring gas development companies have denied association with the families water contamination. In this extreme case, the regulatory authorities were not able to act to support exposed individuals. The grab sample, while able to capture one record of exposure, was costly (over $500) and had to be shipped to a lab in California within 24 hours in order to ensure the samples viability. The family did not hear results of the test for weeks, all the while continuing their exposure. Basic Information on Hydrogen Sulfide Hydrogen Sulfide Monitoring in Gas Patch: Background Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Development HistoryWe currently have two approaches to sensing hydrogen sulfide in Development. First Prototype: Digital Sensor Our first prototype used a digital sensor for hydrogen sulfide. Advantages of this system is that data from the sensor could be logged over time and that tool is reusable and portable. However the Figaro TGS 825 sensor itself is expensive approximately $60 for an individual sensor and $40 in bulk. (does anyone have a link to buy one online?)
Arduino and Industrial H2S Sensor Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor Arduino Patch for Detecting Hydrogen Sulfide Hydrogen Sulfide Detection for Fart Detector Second Prototype: Photographic Paper Our second prototype uses photographic paper. The silver in photographic paper tarnishes with exposure to hydrogen sulfide. We are working on make a test for hydrogen sulfide using strips of photographic paper. We believe this test could be far more affordable than the digital version and accessible to non-programmers.
Photographic Paper for H2S Sensing Hydrogen Sulfide Testing with Black and White Film Hydrogen Sulfide Tarnishing Silver Controlled Testing with B&W Film Hydrogen Sulfide Detectors MSDS sheet for Kodak Photo Flo Inspriation This project is based on these two papers by geologist C. J. Horwell and colleagues that measured hydrogen sulfide concentrations near a volcano in New Zealand. Horwell, C.J., Allen, A.G., Mather, T.A., Patterson, J.E., 2004. Evaluation of a simple passive sampling technique for monitoring volcanogenic hydrogen sulphide. J. Environ. Monitor. 6, 630 - 635. Horwell_JEM_2004_copy.pdf Horwell, C.J., Patterson, J.E., Gamble, J.A., Allen, A.G., 2005. Monitoring and mapping of hydrogen sulphide emissions across an active geothermal field: Rotorua, New Zealand. J. Volcanol. Geotherm. Res. 139, 259-269. Horwell_JVGR_2005_copy.pdf
Original photopaper map made by Horwell et. al. How to make your ownBoth of these tools are currently in the early stages of development, research notes can be found at the links below. There are two different tracks, one utilizing an industrial sensor with an arduino board and the other utilizing photographic paper with silver halide based on research done on H2S at volcanoes. How to Guide for Getting Started Get involved!If you are interested in helping develop hydrogen sulfide sensing, please contribute thoughts, comments and research notes on this page as well as join us on the Public Lab mailing list.
Short-term goals:
Places to start contributing:If you're interested in getting involved you could try following the prototype documentation to make your own film testing strips. We can always use help in researching and documenting hydrogen sulfide health issues. Also perhaps you know of site to test or use this tool? This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section |
Revert | |
| 43 | HannahJG |
June 14, 2014 15:46
| almost 10 years ago
PurposeHydrogen sulfide, which is a well documented but little understood health hazard, is one of the leading causes of injury in the workplace. Although health issues have been clearly linked with the gas, increasing regulation has been difficult since the oil and gas industries are exempt from many federal laws. Public Lab researchers are attempting to innovate novel community based approaches to environmental health problems like hydrogen sulfide, so that communities and workers may begin not only developing systems to track their exposure, but also generating data and evidence in order to scientifically validate their experiences. This tool is being developed to detect hydrogen sulfide in an affordable, quantifiable manner. In September of 2011, Public Laboratory members, met with residents of Garfield County, Colorado to discuss the growing hydrogen sulfide problem in their small, rural community. Recently, the community organized to take a gaseous grab sample from one resident’s kitchen sink. Analysis of the grab sample showed hydrogen sulfide levels of more than 185 times above the long-term exposure level recommended by the EPA (Gassed by Global Community Monitoring). The family, in which the son developed painful skin lesions and other symptoms coincident with this exposure, was forced to abandon the house. They are seeking legal assistance, but so far, neighboring gas development companies have denied association with the families water contamination. In this extreme case, the regulatory authorities were not able to act to support exposed individuals. The grab sample, while able to capture one record of exposure, was costly (over $500) and had to be shipped to a lab in California within 24 hours in order to ensure the samples viability. The family did not hear results of the test for weeks, all the while continuing their exposure. Basic Information on Hydrogen Sulfide Hydrogen Sulfide Monitoring in Gas Patch: Background Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Development HistoryWe currently have two approaches to sensing hydrogen sulfide in Development. First Prototype: Digital Sensor Our first prototype used a digital sensor for hydrogen sulfide. Advantages of this system is that data from the sensor could be logged over time and that tool is reusable and portable. However the Figaro TGS 825 sensor itself is expensive approximately $60 for an individual sensor and $40 in bulk. (does anyone have a link to buy one online?)
Arduino and Industrial H2S Sensor Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor Arduino Patch for Detecting Hydrogen Sulfide Hydrogen Sulfide Detection for Fart Detector Second Prototype: Photographic Paper Our second prototype uses photographic paper. The silver in photographic paper tarnishes with exposure to hydrogen sulfide. We are working on make a test for hydrogen sulfide using strips of photographic paper. We believe this test could be far more affordable than the digital version and accessible to non-programmers.
Photographic Paper for H2S Sensing Hydrogen Sulfide Testing with Black and White Film Hydrogen Sulfide Tarnishing Silver Controlled Testing with B&W Film Hydrogen Sulfide Detectors MSDS sheet for Kodak Photo Flo Inspriation This project is based on these two papers by geologist C. J. Horwell and colleagues that measured hydrogen sulfide concentrations near a volcano in New Zealand. Horwell, C.J., Allen, A.G., Mather, T.A., Patterson, J.E., 2004. Evaluation of a simple passive sampling technique for monitoring volcanogenic hydrogen sulphide. J. Environ. Monitor. 6, 630 - 635. Horwell_JEM_2004_copy.pdf Horwell, C.J., Patterson, J.E., Gamble, J.A., Allen, A.G., 2005. Monitoring and mapping of hydrogen sulphide emissions across an active geothermal field: Rotorua, New Zealand. J. Volcanol. Geotherm. Res. 139, 259-269. Horwell_JVGR_2005_copy.pdf
Original photopaper map made by Horwell et. al. How to make your ownBoth of these tools are currently in the early stages of development, research notes can be found at the links below. There are two different tracks, one utilizing an industrial sensor with an arduino board and the other utilizing photographic paper with silver halide based on research done on H2S at volcanoes. How to Guide for Getting Started Get involved!If you are interested in helping develop hydrogen sulfide sensing, please contribute thoughts, comments and research notes on this page as well as join us on the Public Lab mailing list.
Short-term goals:
Places to start contributing:If you're interested in getting involved you could try following the prototype documentation to make your own film testing strips. We can always use help in researching and documenting hydrogen sulfide health issues. Also perhaps you know of site to test or use this tool? This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section |
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