Detection of atmospheric pollutants by direct analysis of passive Fourier transform infrared interferograms
Methodology is developed that allows interferograms from a passive Fourier transform infrared (FTIR) spectrometer to be analyzed directly. With a digital filtering approach, a set of generalized procedures is developed for real-time monitoring of atmospheric pollutants. These procedures allow the sp...
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| Veröffentlicht in: | Anal. Chem.; (United States) 1988-02, Vol.60 (3), p.264-269 |
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| container_title | Anal. Chem.; (United States) |
| container_volume | 60 |
| creator | Small, Gary W Kroutil, Robert T Ditillo, John T Loerop, William R |
| description | Methodology is developed that allows interferograms from a passive Fourier transform infrared (FTIR) spectrometer to be analyzed directly. With a digital filtering approach, a set of generalized procedures is developed for real-time monitoring of atmospheric pollutants. These procedures allow the spectrometer to be mobile, overcoming problems associated with changing spectral backgrounds and with severe data processing requirements. The methodology allows customized digital filters to be developed that remove information from the interferogram except that associated with frequencies characteristic of a target chemical species of interest. To test the methodology, a filter is derived that is specific of for SF/sub 6/. With the use of a passive FTIR instrument mounted in a helicopter, several passes are made by a ground source of SF/sub 6/, thereby simulating the action of a mobile pollution monitoring system. Interferograms collected during this experiment are used to evaluate the computed filter. |
| doi_str_mv | 10.1021/ac00154a016 |
| format | Article |
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With a digital filtering approach, a set of generalized procedures is developed for real-time monitoring of atmospheric pollutants. These procedures allow the spectrometer to be mobile, overcoming problems associated with changing spectral backgrounds and with severe data processing requirements. The methodology allows customized digital filters to be developed that remove information from the interferogram except that associated with frequencies characteristic of a target chemical species of interest. To test the methodology, a filter is derived that is specific of for SF/sub 6/. With the use of a passive FTIR instrument mounted in a helicopter, several passes are made by a ground source of SF/sub 6/, thereby simulating the action of a mobile pollution monitoring system. 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Chem.; (United States)</title><addtitle>Anal. Chem</addtitle><description>Methodology is developed that allows interferograms from a passive Fourier transform infrared (FTIR) spectrometer to be analyzed directly. With a digital filtering approach, a set of generalized procedures is developed for real-time monitoring of atmospheric pollutants. These procedures allow the spectrometer to be mobile, overcoming problems associated with changing spectral backgrounds and with severe data processing requirements. The methodology allows customized digital filters to be developed that remove information from the interferogram except that associated with frequencies characteristic of a target chemical species of interest. To test the methodology, a filter is derived that is specific of for SF/sub 6/. With the use of a passive FTIR instrument mounted in a helicopter, several passes are made by a ground source of SF/sub 6/, thereby simulating the action of a mobile pollution monitoring system. Interferograms collected during this experiment are used to evaluate the computed filter.</description><subject>400102 - Chemical & Spectral Procedures</subject><subject>500200 - Environment, Atmospheric- Chemicals Monitoring & Transport- (-1989)</subject><subject>AIR</subject><subject>Air Pollutants - analysis</subject><subject>AIR POLLUTION MONITORING</subject><subject>AIR POLLUTION MONITORS</subject><subject>Analytical chemistry</subject><subject>CHEMICAL ANALYSIS</subject><subject>Chemistry</subject><subject>DATA</subject><subject>DESIGN</subject><subject>EMISSION SPECTROSCOPY</subject><subject>ENVIRONMENTAL SCIENCES</subject><subject>Exact sciences and technology</subject><subject>EXPERIMENTAL DATA</subject><subject>FLUIDS</subject><subject>Fourier Analysis</subject><subject>FOURIER TRANSFORM SPECTROMETERS</subject><subject>GASES</subject><subject>INFORMATION</subject><subject>INFRARED SPECTRA</subject><subject>INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY</subject><subject>INTEGRAL TRANSFORMATIONS</subject><subject>MEASURING INSTRUMENTS</subject><subject>MONITORS</subject><subject>NUMERICAL DATA</subject><subject>POLLUTANTS</subject><subject>QUALITATIVE CHEMICAL ANALYSIS</subject><subject>SPECTRA</subject><subject>SPECTROMETERS</subject><subject>Spectrometric and optical methods</subject><subject>Spectrophotometry, Infrared</subject><subject>SPECTROSCOPY</subject><subject>TRANSFORMATIONS</subject><issn>0003-2700</issn><issn>1520-6882</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1988</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpt0MFrFDEYBfAglrqtnjwLgwg9yGgymUwyR1mtFioqu3rwEr7JJDbtzGTIly3uf2_KLIuHnhJ4P0LeI-Qlo-8Yrdh7MJQyUQNlzROyYqKiZaNU9ZSsKKW8rCSlz8gZ4m1mLKNTcsq5qBWXK3L30SZrkg9TEVwBaQw439joTTGHYdglmBIW3b7ofcysgAmGPXp8wDMg-ntbXIZd9DYWKcKELsSx8JOLEG2fL8lGZ2P4E2HE5-TEwYD2xeE8Jz8vP23XX8rrb5-v1h-uS6gZTWVVUxCq6URnaMtt2zAmaV-1zinZu4rbXkhT9ZzJrrOZCpC9UopzaCmzHfBz8np5N2DyGo3PDW9MmKbcQItaKt60Gb1dkIkBMVqn5-hHiHvNqH6YVf83a9avFj3vutH2R3vYMedvDjmggSHXn4zHI5OiFQ3nmZUL85js32MM8U43kkuht983eiN_bzfrH1_1r-wvFg8G9W3eOc-Pj37wHxJInKw</recordid><startdate>19880201</startdate><enddate>19880201</enddate><creator>Small, Gary W</creator><creator>Kroutil, Robert T</creator><creator>Ditillo, John T</creator><creator>Loerop, William R</creator><general>American Chemical Society</general><scope>BSCLL</scope><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>19880201</creationdate><title>Detection of atmospheric pollutants by direct analysis of passive Fourier transform infrared interferograms</title><author>Small, Gary W ; Kroutil, Robert T ; Ditillo, John T ; Loerop, William R</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a410t-240a586b5bc093e961170d29ff87df23ed57c2d317bbe0a55a7d88833a901eba3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1988</creationdate><topic>400102 - Chemical & Spectral Procedures</topic><topic>500200 - Environment, Atmospheric- Chemicals Monitoring & Transport- (-1989)</topic><topic>AIR</topic><topic>Air Pollutants - analysis</topic><topic>AIR POLLUTION MONITORING</topic><topic>AIR POLLUTION MONITORS</topic><topic>Analytical chemistry</topic><topic>CHEMICAL ANALYSIS</topic><topic>Chemistry</topic><topic>DATA</topic><topic>DESIGN</topic><topic>EMISSION SPECTROSCOPY</topic><topic>ENVIRONMENTAL SCIENCES</topic><topic>Exact sciences and technology</topic><topic>EXPERIMENTAL DATA</topic><topic>FLUIDS</topic><topic>Fourier Analysis</topic><topic>FOURIER TRANSFORM SPECTROMETERS</topic><topic>GASES</topic><topic>INFORMATION</topic><topic>INFRARED SPECTRA</topic><topic>INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY</topic><topic>INTEGRAL TRANSFORMATIONS</topic><topic>MEASURING INSTRUMENTS</topic><topic>MONITORS</topic><topic>NUMERICAL DATA</topic><topic>POLLUTANTS</topic><topic>QUALITATIVE CHEMICAL ANALYSIS</topic><topic>SPECTRA</topic><topic>SPECTROMETERS</topic><topic>Spectrometric and optical methods</topic><topic>Spectrophotometry, Infrared</topic><topic>SPECTROSCOPY</topic><topic>TRANSFORMATIONS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Small, Gary W</creatorcontrib><creatorcontrib>Kroutil, Robert T</creatorcontrib><creatorcontrib>Ditillo, John T</creatorcontrib><creatorcontrib>Loerop, William R</creatorcontrib><creatorcontrib>Univ. of Iowa, Iowa City</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Anal. Chem.; (United States)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Small, Gary W</au><au>Kroutil, Robert T</au><au>Ditillo, John T</au><au>Loerop, William R</au><aucorp>Univ. of Iowa, Iowa City</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Detection of atmospheric pollutants by direct analysis of passive Fourier transform infrared interferograms</atitle><jtitle>Anal. Chem.; (United States)</jtitle><addtitle>Anal. Chem</addtitle><date>1988-02-01</date><risdate>1988</risdate><volume>60</volume><issue>3</issue><spage>264</spage><epage>269</epage><pages>264-269</pages><issn>0003-2700</issn><eissn>1520-6882</eissn><coden>ANCHAM</coden><abstract>Methodology is developed that allows interferograms from a passive Fourier transform infrared (FTIR) spectrometer to be analyzed directly. With a digital filtering approach, a set of generalized procedures is developed for real-time monitoring of atmospheric pollutants. These procedures allow the spectrometer to be mobile, overcoming problems associated with changing spectral backgrounds and with severe data processing requirements. The methodology allows customized digital filters to be developed that remove information from the interferogram except that associated with frequencies characteristic of a target chemical species of interest. To test the methodology, a filter is derived that is specific of for SF/sub 6/. With the use of a passive FTIR instrument mounted in a helicopter, several passes are made by a ground source of SF/sub 6/, thereby simulating the action of a mobile pollution monitoring system. Interferograms collected during this experiment are used to evaluate the computed filter.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><pmid>3354837</pmid><doi>10.1021/ac00154a016</doi><tpages>6</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0003-2700 |
| ispartof | Anal. Chem.; (United States), 1988-02, Vol.60 (3), p.264-269 |
| issn | 0003-2700 1520-6882 |
| language | eng |
| recordid | cdi_crossref_primary_10_1021_ac00154a016 |
| source | MEDLINE; ACS Publications |
| subjects | 400102 - Chemical & Spectral Procedures 500200 - Environment, Atmospheric- Chemicals Monitoring & Transport- (-1989) AIR Air Pollutants - analysis AIR POLLUTION MONITORING AIR POLLUTION MONITORS Analytical chemistry CHEMICAL ANALYSIS Chemistry DATA DESIGN EMISSION SPECTROSCOPY ENVIRONMENTAL SCIENCES Exact sciences and technology EXPERIMENTAL DATA FLUIDS Fourier Analysis FOURIER TRANSFORM SPECTROMETERS GASES INFORMATION INFRARED SPECTRA INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY INTEGRAL TRANSFORMATIONS MEASURING INSTRUMENTS MONITORS NUMERICAL DATA POLLUTANTS QUALITATIVE CHEMICAL ANALYSIS SPECTRA SPECTROMETERS Spectrometric and optical methods Spectrophotometry, Infrared SPECTROSCOPY TRANSFORMATIONS |
| title | Detection of atmospheric pollutants by direct analysis of passive Fourier transform infrared interferograms |
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