Revisions for Electronic Hydrogen Sulfide Sensors
| 62 | HannahJG |
June 13, 2014 17:12
| over 10 years ago
PurposeThis 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. Hydrogen sulfide, which is a well documented but little understood health hazard, has become 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. 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 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 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: 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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| 61 | HannahJG |
June 13, 2014 17:10
| over 10 years ago
PurposeThis 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. Hydrogen sulfide, which is a well documented but little understood health hazard, has become 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. 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 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 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: 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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| 60 | HannahJG |
June 13, 2014 16:17
| over 10 years ago
PurposeThis 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. Hydrogen sulfide, which is a well documented but little understood health hazard, has become 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.
Development HistoryWe currently have two approaches to sensing hydrogen sulfide in Development. 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 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. This project is based on these two papers: 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, 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.
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 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 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 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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| 59 | HannahJG |
June 13, 2014 03:27
| over 10 years ago
PurposeThis 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. 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. Hydrogen sulfide, which is a well documented but little understood health hazard, has become 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.
Development HistoryWe currently have two approaches to sensing hydrogen sulfide in Development. 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 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. This project is based on these two papers: 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, 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.
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. 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 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 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 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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| 58 | HannahJG |
June 13, 2014 03:26
| over 10 years ago
PurposeThis 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. 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. Hydrogen sulfide, which is a well documented but little understood health hazard, has become 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.
Development HistoryWe currently have two approaches to sensing hydrogen sulfide in Development. 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 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. This project is based on these two papers: 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, 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.
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. 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 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 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 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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| 57 | warren |
October 12, 2012 15:09
| over 12 years ago
PurposeThis 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. 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. There are large gaps in our public health system, particularly around environmental health issues associated with large scale industries like oil and gas. This instance is just one of many. 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.
Applications and example usesWe currently have two approaches to sensing hydrogen sulfide in Development. 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?) 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. This project is based on these two papers: 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, 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.
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. 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 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 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 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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| 56 | sara |
May 14, 2012 20:11
| over 12 years ago
PurposeThis 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. 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. There are large gaps in our public health system, particularly around environmental health issues associated with large scale industries like oil and gas. This instance is just one of many. 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. Applications and example usesWe currently have two approaches to sensing hydrogen sulfide in Development. 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?) 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. This project is based on these two papers: 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, 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.
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. 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 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 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 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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| 55 | sara |
January 31, 2012 19:52
| almost 13 years ago
PurposeThis 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. 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. There are large gaps in our public health system, particularly around environmental health issues associated with large scale industries like oil and gas. This instance is just one of many. 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. Applications and example usesWe currently have two approaches to sensing hydrogen sulfide in Development. 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?) 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. This project is based on these two papers: 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, 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.
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. 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 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 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 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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| 54 | Shannon |
January 25, 2012 18:32
| almost 13 years ago
PurposeThis 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. 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. There are large gaps in our public health system, particularly around environmental health issues associated with large scale industries like oil and gas. This instance is just one of many. 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. Applications and example usesWe currently have two approaches to sensing hydrogen sulfide in Development. 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?) 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.
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. 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 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 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 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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| 53 | warren |
January 18, 2012 17:34
| almost 13 years ago
PurposeThis 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. 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. There are large gaps in our public health system, particularly around environmental health issues associated with large scale industries like oil and gas. This instance is just one of many. 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. Applications and example usesWe currently have two approaches to sensing hydrogen sulfide in Development. 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?) 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.
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. 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 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 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 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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| 52 | warren |
December 22, 2011 22:17
| about 13 years ago
PurposeThis 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. 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. There are large gaps in our public health system, particularly around environmental health issues associated with large scale industries like oil and gas. This instance is just one of many. 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. Applications and example usesWe currently have two approaches to sensing hydrogen sulfide in Development. 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?) 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.
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. Basic Information on Hydrogen Sulfide [Hydrogen Sulfide Monitoring in Gas Patch: Background]9http://publiclaboratory.org/notes/sara/9-11-2011/hydrogen-sulfide-monitoring-gas-patch-background) Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide 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 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 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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| 51 | warren |
December 22, 2011 22:04
| about 13 years ago
PurposeThis 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. 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. There are large gaps in our public health system, particularly around environmental health issues associated with large scale industries like oil and gas. This instance is just one of many. 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. Applications and example usesWe currently have two approaches to sensing hydrogen sulfide in Development. 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?) 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.
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. Basic Information on Hydrogen Sulfide [Hydrogen Sulfide Monitoring in Gas Patch: Background]9http://publiclaboratory.org/notes/sara/9-11-2011/hydrogen-sulfide-monitoring-gas-patch-background) Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Arduino and Industrial H2S Sensor Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor [Arduino Patch for Detecting Hydrogen] Sulfide(http://publiclaboratory.org/notes/bha/9-11-2011/arduino-patch-detecting-hydrogen-sulfide) Hydrogen Sulfide Detection for Fart Detector 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 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 | warren |
December 22, 2011 21:54
| about 13 years ago
PurposeThis 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. 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. There are large gaps in our public health system, particularly around environmental health issues associated with large scale industries like oil and gas. This instance is just one of many. 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. Applications and example usesWe currently have two approaches to sensing hydrogen sulfide in Development. 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?) 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.
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. Basic Information on Hydrogen Sulfide [Hydrogen Sulfide Monitoring in Gas Patch: Background]9http://publiclaboratory.org/notes/sara/9-11-2011/hydrogen-sulfide-monitoring-gas-patch-background) Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Arduino and Industrial H2S Sensor Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor [Arduino Patch for Detecting Hydrogen] Sulfide(http://publiclaboratory.org/notes/bha/9-11-2011/arduino-patch-detecting-hydrogen-sulfide) Hydrogen Sulfide Detection for Fart Detector 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 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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| 49 | sara |
December 22, 2011 19:48
| about 13 years ago
PurposeThis 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. 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. There are large gaps in our public health system, particularly around environmental health issues associated with large scale industries like oil and gas. This instance is just one of many. 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. Applications and example usesWe currently have two approaches to sensing hydrogen sulfide in Development. 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 TGS825 sensor itself is expensive approximately $60 for an individual sensor and $40 in bulk. 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.
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. Basic Information on Hydrogen Sulfide [Hydrogen Sulfide Monitoring in Gas Patch: Background]9http://publiclaboratory.org/notes/sara/9-11-2011/hydrogen-sulfide-monitoring-gas-patch-background) Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Arduino and Industrial H2S Sensor Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor [Arduino Patch for Detecting Hydrogen] Sulfide(http://publiclaboratory.org/notes/bha/9-11-2011/arduino-patch-detecting-hydrogen-sulfide) Hydrogen Sulfide Detection for Fart Detector 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 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.
This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section |
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| 48 | Shannon |
December 22, 2011 19:16
| about 13 years ago
PurposeThis 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. 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. There are large gaps in our public health system, particularly around environmental health issues associated with large scale industries like oil and gas. This instance is just one of many. 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. Applications and example usesWe currently have two approaches to sensing hydrogen sulfide in Development. 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 sensor itself is expensive. 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.
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. Basic Information on Hydrogen Sulfide [Hydrogen Sulfide Monitoring in Gas Patch: Background]9http://publiclaboratory.org/notes/sara/9-11-2011/hydrogen-sulfide-monitoring-gas-patch-background) Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Arduino and Industrial H2S Sensor Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor [Arduino Patch for Detecting Hydrogen] Sulfide(http://publiclaboratory.org/notes/bha/9-11-2011/arduino-patch-detecting-hydrogen-sulfide) Hydrogen Sulfide Detection for Fart Detector 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 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.
This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section |
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| 47 | sara |
December 22, 2011 19:03
| about 13 years ago
PurposeThis 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. 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. There are large gaps in our public health system, particularly around environmental health issues associated with large scale industries like oil and gas. This instance is just one of many. 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. Applications and example usesWe currently have two approaches to sensing hydrogen sulfide in Development. 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 sensor itself is expensive. 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. 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. Basic Information on Hydrogen Sulfide [Hydrogen Sulfide Monitoring in Gas Patch: Background]9http://publiclaboratory.org/notes/sara/9-11-2011/hydrogen-sulfide-monitoring-gas-patch-background) Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Arduino and Industrial H2S Sensor Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor [Arduino Patch for Detecting Hydrogen] Sulfide(http://publiclaboratory.org/notes/bha/9-11-2011/arduino-patch-detecting-hydrogen-sulfide) Hydrogen Sulfide Detection for Fart Detector 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 This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section 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.
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| 46 | sara |
December 22, 2011 19:01
| about 13 years ago
PurposeThis 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. 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. There are large gaps in our public health system, particularly around environmental health issues associated with large scale industries like oil and gas. This instance is just one of many. 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. Applications and example usesWe currently have two approaches to sensing hydrogen sulfide in Development. 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 sensor itself is expensive. 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. 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. Basic Information on Hydrogen Sulfide [Hydrogen Sulfide Monitoring in Gas Patch: Background]9http://publiclaboratory.org/notes/sara/9-11-2011/hydrogen-sulfide-monitoring-gas-patch-background) Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Arduino and Industrial H2S Sensor Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor [Arduino Patch for Detecting Hydrogen] Sulfide(http://publiclaboratory.org/notes/bha/9-11-2011/arduino-patch-detecting-hydrogen-sulfide) Hydrogen Sulfide Detection for Fart Detector 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 This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section 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.
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| 45 | sara |
December 22, 2011 18:58
| about 13 years ago
PurposeThis 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. 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. There are large gaps in our public health system, particularly around environmental health issues associated with large scale industries like oil and gas. This instance is just one of many. 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. Applications and example usesWe currently have two approaches to sensing hydrogen sulfide in Development. 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 sensor itself is expensive. 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. It looks like this... (photos) 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. Basic Information on Hydrogen Sulfide [Hydrogen Sulfide Monitoring in Gas Patch: Background]9http://publiclaboratory.org/notes/sara/9-11-2011/hydrogen-sulfide-monitoring-gas-patch-background) Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Arduino and Industrial H2S Sensor Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor [Arduino Patch for Detecting Hydrogen] Sulfide(http://publiclaboratory.org/notes/bha/9-11-2011/arduino-patch-detecting-hydrogen-sulfide) Hydrogen Sulfide Detection for Fart Detector 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 This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section 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.
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| 44 | sara |
December 15, 2011 19:06
| about 13 years ago
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. 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. There are large gaps in our public health system, particularly around environmental health issues associated with large scale industries like oil and gas. This instance is just one of many. 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. 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 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. Basic Information on Hydrogen Sulfide [Hydrogen Sulfide Monitoring in Gas Patch: Background]9http://publiclaboratory.org/notes/sara/9-11-2011/hydrogen-sulfide-monitoring-gas-patch-background) Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Arduino and Industrial H2S Sensor Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor [Arduino Patch for Detecting Hydrogen] Sulfide(http://publiclaboratory.org/notes/bha/9-11-2011/arduino-patch-detecting-hydrogen-sulfide) Hydrogen Sulfide Detection for Fart Detector 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 This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section |
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| 43 | Shannon |
November 22, 2011 03:07
| about 13 years ago
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. 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. There are large gaps in our public health system, particularly around environmental health issues associated with large scale industries like oil and gas. This instance is just one of many. 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. 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 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. Basic Information on Hydrogen Sulfide [Hydrogen Sulfide Monitoring in Gas Patch: Background]9http://publiclaboratory.org/notes/sara/9-11-2011/hydrogen-sulfide-monitoring-gas-patch-background) Hydrogen Sulfide: Information on the Gas Conversion from µg/m3 to ppm hydrogen sulfide Arduino and Industrial H2S Sensor Temperature and Humidity Sensors to Correct H2S Arduino + Figaro Hydrogen Sulfide Sensor [Arduino Patch for Detecting Hydrogen] Sulfide(http://publiclaboratory.org/notes/bha/9-11-2011/arduino-patch-detecting-hydrogen-sulfide) Hydrogen Sulfide Detection for Fart Detector 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 This project is partially funded by a grant from the American Anthropology Association, Anthropology and Environment section |
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