Optimizing the optical configuration for light-pipe gas chromatography/Fourier transform infrared spectrometry interfaces
Previous investigators have predicted that by optimizing the optical configuration of the light-pipe interface between a gas chromatograph and a Fourier transform infrared spectrometer and utilizing detectors with areas as small as 0.01 mm/sup 2/, detection limits might be reduced to the subnanogram...
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| Veröffentlicht in: | Anal. Chem.; (United States) 1987-10, Vol.59 (19), p.2356-2361 |
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| container_title | Anal. Chem.; (United States) |
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| creator | Henry, David E Giorgetti, Aldo Haefner, Andrew M Griffiths, Peter R Gurka, Donald F |
| description | Previous investigators have predicted that by optimizing the optical configuration of the light-pipe interface between a gas chromatograph and a Fourier transform infrared spectrometer and utilizing detectors with areas as small as 0.01 mm/sup 2/, detection limits might be reduced to the subnanogram level. The results presented in this report indicate that this is presently not possible and suggest that the detection limits at ambient temperatures of a practical light-pipe interface can be improved by no more than 50% compared to contemporary systems. Three optical configurations are evaluated for their ability to discriminate against emission from the end of a hot light-pipe. Of these, the most effective in reducing the signal loss normally encountered at elevated light-pipe temperatures utilizes an aperture at a focus between the light-pipe and detector. A loss in signal of only 20% is observed when the temperature of the light-pipe is raised from ambient to 300/sup 0/C by using this optical configuration. |
| doi_str_mv | 10.1021/ac00146a009 |
| format | Article |
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The results presented in this report indicate that this is presently not possible and suggest that the detection limits at ambient temperatures of a practical light-pipe interface can be improved by no more than 50% compared to contemporary systems. Three optical configurations are evaluated for their ability to discriminate against emission from the end of a hot light-pipe. Of these, the most effective in reducing the signal loss normally encountered at elevated light-pipe temperatures utilizes an aperture at a focus between the light-pipe and detector. A loss in signal of only 20% is observed when the temperature of the light-pipe is raised from ambient to 300/sup 0/C by using this optical configuration.</description><identifier>ISSN: 0003-2700</identifier><identifier>EISSN: 1520-6882</identifier><identifier>DOI: 10.1021/ac00146a009</identifier><identifier>PMID: 3674447</identifier><identifier>CODEN: ANCHAM</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>400102 - Chemical & Spectral Procedures ; 400105 - Separation Procedures ; ABSORPTION SPECTROSCOPY ; Analytical chemistry ; BLOOD VESSELS ; BODY ; CAPILLARIES ; CARBOXYLIC ACID SALTS ; CARDIOVASCULAR SYSTEM ; CHEMICAL ANALYSIS ; Chemistry ; Chromatographic methods and physical methods associated with chromatography ; CHROMATOGRAPHY ; Chromatography, Gas - instrumentation ; DATA ; ENVIRONMENTAL MATERIALS ; Exact sciences and technology ; EXPERIMENTAL DATA ; FIBER OPTICS ; Fourier Analysis ; FOURIER TRANSFORM SPECTROMETERS ; Gas chromatographic methods ; GAS CHROMATOGRAPHY ; INFORMATION ; INFRARED SPECTRA ; INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ; INTERFACES ; MATERIALS ; MEASURING INSTRUMENTS ; METHACRYLATES ; NUMERICAL DATA ; OPTICAL SYSTEMS ; OPTIMIZATION ; ORGANS ; QUALITATIVE CHEMICAL ANALYSIS ; SEPARATION PROCESSES ; SPECTRA ; SPECTROMETERS ; Spectrophotometry, Infrared - instrumentation ; SPECTROSCOPY ; TEMPERATURE DEPENDENCE ; TRACE AMOUNTS</subject><ispartof>Anal. 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Chem.; (United States)</title><addtitle>Anal. Chem</addtitle><description>Previous investigators have predicted that by optimizing the optical configuration of the light-pipe interface between a gas chromatograph and a Fourier transform infrared spectrometer and utilizing detectors with areas as small as 0.01 mm/sup 2/, detection limits might be reduced to the subnanogram level. The results presented in this report indicate that this is presently not possible and suggest that the detection limits at ambient temperatures of a practical light-pipe interface can be improved by no more than 50% compared to contemporary systems. Three optical configurations are evaluated for their ability to discriminate against emission from the end of a hot light-pipe. Of these, the most effective in reducing the signal loss normally encountered at elevated light-pipe temperatures utilizes an aperture at a focus between the light-pipe and detector. A loss in signal of only 20% is observed when the temperature of the light-pipe is raised from ambient to 300/sup 0/C by using this optical configuration.</description><subject>400102 - Chemical & Spectral Procedures</subject><subject>400105 - Separation Procedures</subject><subject>ABSORPTION SPECTROSCOPY</subject><subject>Analytical chemistry</subject><subject>BLOOD VESSELS</subject><subject>BODY</subject><subject>CAPILLARIES</subject><subject>CARBOXYLIC ACID SALTS</subject><subject>CARDIOVASCULAR SYSTEM</subject><subject>CHEMICAL ANALYSIS</subject><subject>Chemistry</subject><subject>Chromatographic methods and physical methods associated with chromatography</subject><subject>CHROMATOGRAPHY</subject><subject>Chromatography, Gas - instrumentation</subject><subject>DATA</subject><subject>ENVIRONMENTAL MATERIALS</subject><subject>Exact sciences and technology</subject><subject>EXPERIMENTAL DATA</subject><subject>FIBER OPTICS</subject><subject>Fourier Analysis</subject><subject>FOURIER TRANSFORM SPECTROMETERS</subject><subject>Gas chromatographic methods</subject><subject>GAS CHROMATOGRAPHY</subject><subject>INFORMATION</subject><subject>INFRARED SPECTRA</subject><subject>INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY</subject><subject>INTERFACES</subject><subject>MATERIALS</subject><subject>MEASURING INSTRUMENTS</subject><subject>METHACRYLATES</subject><subject>NUMERICAL DATA</subject><subject>OPTICAL SYSTEMS</subject><subject>OPTIMIZATION</subject><subject>ORGANS</subject><subject>QUALITATIVE CHEMICAL ANALYSIS</subject><subject>SEPARATION PROCESSES</subject><subject>SPECTRA</subject><subject>SPECTROMETERS</subject><subject>Spectrophotometry, Infrared - instrumentation</subject><subject>SPECTROSCOPY</subject><subject>TEMPERATURE DEPENDENCE</subject><subject>TRACE AMOUNTS</subject><issn>0003-2700</issn><issn>1520-6882</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1987</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNptkcGL1DAUxoso6-zqybMQRPQgdZM2TdqjDO4qLKziCt7Ca_rSZp023SQFx79-M3QYPHgIIfl-fLz3fVn2itGPjBbsEjSljAugtHmSbVhV0FzUdfE021BKy7yQlD7PzkO4TxijTJxlZ6WQnHO5yfa3c7Sj_WunnsQBiUtPDTui3WRsv3iI1k3EOE92th9iPtsZSQ-B6MG7EaLrPczD_vLKLd6iJ9HDFBI-EjsZDx47EmbUMcEY_T79RvQGNIYX2TMDu4Avj_dF9vPq8932S35ze_11--kmB85ozLFusDPSIJet4KYWqFnVNkLzDoyoKt2lIxEqUdIC2hpYS6U0pinKsmqQlhfZm9XXhWhV0DaiHtJ6U5pKCVrLpjpA71Zo9u5hwRDVaIPG3Q4mdEtQNaNNwyRP4IcV1N6F4NGo2dsR_F4xqg5tqH_aSPTro-3Sjtid2GP8SX971CGk1FNgk7bhhEmRyuQHm3zFbIj45ySD_62ELGWl7r79UL9KuU221-p74t-vPOig7lMzUwr4vwM-AsGEr_M</recordid><startdate>19871001</startdate><enddate>19871001</enddate><creator>Henry, David E</creator><creator>Giorgetti, Aldo</creator><creator>Haefner, Andrew M</creator><creator>Griffiths, Peter R</creator><creator>Gurka, Donald F</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>7X8</scope><scope>OTOTI</scope></search><sort><creationdate>19871001</creationdate><title>Optimizing the optical configuration for light-pipe gas chromatography/Fourier transform infrared spectrometry interfaces</title><author>Henry, David E ; Giorgetti, Aldo ; Haefner, Andrew M ; Griffiths, Peter R ; Gurka, Donald F</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a410t-e89edf7fe47b64f86ec15b96c4daf655cd55c7ea56302ab8a1b077ff923359e03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1987</creationdate><topic>400102 - Chemical & Spectral Procedures</topic><topic>400105 - Separation Procedures</topic><topic>ABSORPTION SPECTROSCOPY</topic><topic>Analytical chemistry</topic><topic>BLOOD VESSELS</topic><topic>BODY</topic><topic>CAPILLARIES</topic><topic>CARBOXYLIC ACID SALTS</topic><topic>CARDIOVASCULAR SYSTEM</topic><topic>CHEMICAL ANALYSIS</topic><topic>Chemistry</topic><topic>Chromatographic methods and physical methods associated with chromatography</topic><topic>CHROMATOGRAPHY</topic><topic>Chromatography, Gas - instrumentation</topic><topic>DATA</topic><topic>ENVIRONMENTAL MATERIALS</topic><topic>Exact sciences and technology</topic><topic>EXPERIMENTAL DATA</topic><topic>FIBER OPTICS</topic><topic>Fourier Analysis</topic><topic>FOURIER TRANSFORM SPECTROMETERS</topic><topic>Gas chromatographic methods</topic><topic>GAS CHROMATOGRAPHY</topic><topic>INFORMATION</topic><topic>INFRARED SPECTRA</topic><topic>INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY</topic><topic>INTERFACES</topic><topic>MATERIALS</topic><topic>MEASURING INSTRUMENTS</topic><topic>METHACRYLATES</topic><topic>NUMERICAL DATA</topic><topic>OPTICAL SYSTEMS</topic><topic>OPTIMIZATION</topic><topic>ORGANS</topic><topic>QUALITATIVE CHEMICAL ANALYSIS</topic><topic>SEPARATION PROCESSES</topic><topic>SPECTRA</topic><topic>SPECTROMETERS</topic><topic>Spectrophotometry, Infrared - instrumentation</topic><topic>SPECTROSCOPY</topic><topic>TEMPERATURE DEPENDENCE</topic><topic>TRACE AMOUNTS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Henry, David E</creatorcontrib><creatorcontrib>Giorgetti, Aldo</creatorcontrib><creatorcontrib>Haefner, Andrew M</creatorcontrib><creatorcontrib>Griffiths, Peter R</creatorcontrib><creatorcontrib>Gurka, Donald F</creatorcontrib><creatorcontrib>Univ. of California, Riverside</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>MEDLINE - Academic</collection><collection>OSTI.GOV</collection><jtitle>Anal. Chem.; (United States)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Henry, David E</au><au>Giorgetti, Aldo</au><au>Haefner, Andrew M</au><au>Griffiths, Peter R</au><au>Gurka, Donald F</au><aucorp>Univ. of California, Riverside</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Optimizing the optical configuration for light-pipe gas chromatography/Fourier transform infrared spectrometry interfaces</atitle><jtitle>Anal. Chem.; (United States)</jtitle><addtitle>Anal. Chem</addtitle><date>1987-10-01</date><risdate>1987</risdate><volume>59</volume><issue>19</issue><spage>2356</spage><epage>2361</epage><pages>2356-2361</pages><issn>0003-2700</issn><eissn>1520-6882</eissn><coden>ANCHAM</coden><abstract>Previous investigators have predicted that by optimizing the optical configuration of the light-pipe interface between a gas chromatograph and a Fourier transform infrared spectrometer and utilizing detectors with areas as small as 0.01 mm/sup 2/, detection limits might be reduced to the subnanogram level. The results presented in this report indicate that this is presently not possible and suggest that the detection limits at ambient temperatures of a practical light-pipe interface can be improved by no more than 50% compared to contemporary systems. Three optical configurations are evaluated for their ability to discriminate against emission from the end of a hot light-pipe. Of these, the most effective in reducing the signal loss normally encountered at elevated light-pipe temperatures utilizes an aperture at a focus between the light-pipe and detector. A loss in signal of only 20% is observed when the temperature of the light-pipe is raised from ambient to 300/sup 0/C by using this optical configuration.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><pmid>3674447</pmid><doi>10.1021/ac00146a009</doi><tpages>6</tpages></addata></record> |
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| identifier | ISSN: 0003-2700 |
| ispartof | Anal. Chem.; (United States), 1987-10, Vol.59 (19), p.2356-2361 |
| issn | 0003-2700 1520-6882 |
| language | eng |
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| source | ACS Publications; MEDLINE |
| subjects | 400102 - Chemical & Spectral Procedures 400105 - Separation Procedures ABSORPTION SPECTROSCOPY Analytical chemistry BLOOD VESSELS BODY CAPILLARIES CARBOXYLIC ACID SALTS CARDIOVASCULAR SYSTEM CHEMICAL ANALYSIS Chemistry Chromatographic methods and physical methods associated with chromatography CHROMATOGRAPHY Chromatography, Gas - instrumentation DATA ENVIRONMENTAL MATERIALS Exact sciences and technology EXPERIMENTAL DATA FIBER OPTICS Fourier Analysis FOURIER TRANSFORM SPECTROMETERS Gas chromatographic methods GAS CHROMATOGRAPHY INFORMATION INFRARED SPECTRA INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY INTERFACES MATERIALS MEASURING INSTRUMENTS METHACRYLATES NUMERICAL DATA OPTICAL SYSTEMS OPTIMIZATION ORGANS QUALITATIVE CHEMICAL ANALYSIS SEPARATION PROCESSES SPECTRA SPECTROMETERS Spectrophotometry, Infrared - instrumentation SPECTROSCOPY TEMPERATURE DEPENDENCE TRACE AMOUNTS |
| title | Optimizing the optical configuration for light-pipe gas chromatography/Fourier transform infrared spectrometry interfaces |
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