Analytical techniques for trace organic compounds - II. Detectors for gas chromatography

Westmoreland, David G.; Rhodes, Gerald R.

doi:10.1351/pac198961061147

Cited by 26 publications

(13 citation statements)

References 8 publications

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“…54 Esse método de detecção é baseado na queima dos analitos em uma chama de hidrogênio, a qual é posicionada entre dois eletrodos com um potencial aplicado na faixa de 300-400 V. A combustão gera espécies carregadas (e.g. CHO + e elétrons) e, consequentemente, uma corrente elétrica proporcional ao número de átomos de carbono.…”

Section: Detectores Em Cromatografia a Gásunclassified

“…Ao contrário do FID e MS, a alta sensibilidade do ECD não é atribuída ao baixo BG, mas à alta eficiência de captura de elétrons (LODs para espécies halogenadas estão na faixa de fg, por exemplo). 54 De fato, espécies que não apresentam alta afinidade eletrônica geram baixa sensibilidade ou não são detectadas. Outra característica importante é a estabilidade da corrente de elétrons no ECD, gerada por um emissor de radiação β (e.g.…”

Section: Detectores Em Cromatografia a Gásunclassified

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Sinais de fundo em análise instrumental: uma discussão essencial em cursos de graduação

Amais¹,

Rocha²,

Nóbrega³

2016

Quim. Nova

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Section: Detectores Em Cromatografia a Gásunclassified

Sinais de fundo em análise instrumental: uma discussão essencial em cursos de graduação

Amais¹,

Rocha²,

Nóbrega³

2016

Quim. Nova

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“…The reflected power from an MIP was reported to have potential for GC detection but detection limits for carbon and hydrogen were in the u per nanogram per second range (H26). Inductively couplef (H27) and capacitively coupled (HB) plasmas were evaluated, and detection limits for several non-metallic elements ranged from although there is correlation t etween UV lamp emission and ions as charge carriers for the response, it is the on 7 y gas acteristics, and detection limits of many GC detectors was provided (111).…”

Section: Optical Detectorsmentioning

confidence: 99%

Gas chromatography

Eiceman¹,

Clement²,

Hill³

1992

Anal. Chem.

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411) mnkston, J. D.; Deianey, T. E.; Bowling, D. J.; Chester, T. L. J . Hb@ Resol&. Chrometogr. 1991, 14. 401-406. (412) m a k e s , M.; Vasconwlos, A. M. p.; ames de ~~~~e d~, E. J, s,; Chaves das Neves, H. J.; Nunes da Ponte, M. J. Am. 0 1 1 Chem. SOC. 1991, 68, 474-480. (413) Rossi, M.; Schiraldi, A.; Spedicato, E. selective chromatographic phases, use of GC/MS for environmental research, and the development of ion mobility spectrometry as a chemical sensor, process monitor. and chromatographic detector. He also has interests in atmospheric pressure ion-molecule chemistry exemplified by the electron capture detector. He regularly teaches separations chemistry and electronics at the graduate level and quantitative analysis at the undergraduate level. Ray E. ckment is a Research Sdentist with the Ontario Ministry of the Environment, Laboratory Services Branch, and Associate Executive Director of the Canadian Institute for Research in Atmospheric Chemistry (CI-RAC). He graduated with his Ph.D. from the University of Waterloo in 1981. Dr. Clement has taught undergraduate courses on GC techniques and instrumentation, and has raphylMass Spectrometry: Principles and Techniques. His principal research areas involve the uses of GC and GClMS for the analysis of ultratrace levels of toxic organics in the environment, specifically for the c h b rinated dlbenmpdbxins and dlbenzofurans. He has authored some 80 publications in this area and currently serves on the editorial board of Chemosphere. As a member of CIRAC, Dr. Clement is also interested in atmospheric research including gbbal warming and the long-range transport of toxic organics. coauthored the book Basic Gas chromarug-Herbed H. Hm, Jr., is a Professor of Chemistry at Washington State University where he directs an active research program in the development of instrumentation for trace organic analysis. His research interests include gas chromatogaphy, supercritical fluid chromatography, ion mobility spectrometry, ambient pressure ionization sources, and mass spectrometry. He received his B.S. degree in 1970 from Rhodes College in Memphis, TN, his M.S. degree in 1973 from the University of Missouri, Columbia, MO and his Ph.D. degree in 1975 from Dalhousie University, Halifax, Nova Scotia. Canada. I n 1975 he was a postdoctoral felbw at the A. OVERVIEW During this review period covering 1990 and 1991, about 500 publications appeared about X-ray spectroscopy (XRS) measurements, and a few hundred more concerning X-ray instrumentation, optical elements, and the use of X-rays in plasma diagnostics. Since this set of publications is nowadays easily accessible by abstracting services, this review will not aim to be complete and will consider exclusively those papers that discuss novelties of most interest for X-ray spectroscopists. During the preparation of this review, we screened about 400 publications in various languages; non-English

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“…The ECD is a workhorse in environmental analysis and is usually used for the determination of pesticides, polychlorinated biphenyls (PCBs), and halocarbons. Nevertheless, this detector may also be used in clinical analysis for the determination of drugs and hormones .…”

Section: Introductionmentioning

confidence: 99%

Recent advances and applications of gas chromatography vacuum ultraviolet spectroscopy

Santos

Schug

2016

J of Separation Science

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The vacuum ultraviolet spectrophotometer was developed recently as an alternative to existing gas chromatography detectors. This detector measures the absorption of gas-phase chemical species in the range of 120-240 nm, where all chemical compounds present unique absorption spectra. Therefore, qualitative analysis can be performed and quantification follows standard Beer-Lambert law principles. Different fields of application, such as petrochemical, food, and environmental analysis have been explored. Commonly demonstrated is the capability for facile deconvolution of co-eluting analytes. The concept of additive absorption for co-eluting analytes has also been advanced for classification and speciation of complex mixtures using a data treatment procedure termed time interval deconvolution. Furthermore, pseudo-absolute quantitation can be performed for system diagnosis, as well as potentially calibrationless quantitation. In this manuscript an overview of these features, the vacuum ultraviolet spectrophotometer instrumentation, and performance capabilities are given. A discussion of the applications of the vacuum ultraviolet detector is provided by describing and discussing the papers published thus far since 2014.

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Analytical techniques for trace organic compounds - II. Detectors for gas chromatography

Abstract: Abstract

Cited by 26 publications

References 8 publications

Sinais de fundo em análise instrumental: uma discussão essencial em cursos de graduação

Sinais de fundo em análise instrumental: uma discussão essencial em cursos de graduação

Gas chromatography

Recent advances and applications of gas chromatography vacuum ultraviolet spectroscopy

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