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Gas Chromatography-Mass Spectrometry
2006Gas chromatography-mass spectrometry (GC-MS) has been used in hormone assays particularly for steroids in biological fluids. The combination of GC with MS exploits the high-resolving power of gas chromatography to separate closely related molecules, and the ability of the MS to provide precise data for identification and quantification of the separated
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Integrated gas chromatography-mass spectrometry
Quarterly Reviews of Biophysics, 1973Mass spectrometric analysis of organic compounds was in the early 1950s done mostly for quantitative determination of petroleum products. The use of the mass spectrometer for qualitative analysis of solid organic material samples was shown by O'Neil & Wier (1951) and since then a continuous increase in mass spectrometric studies of different ...
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Gas chromatography-mass spectrometry
1982The complexity and wide range of organic acids present in urine, and other biological fluids, makes their quantification and positive identification a difficult problem. Although chromatographic characteristics of individual compounds, such as retention data on gas, liquid and thin-layer chromatography, are extremely useful indicators of probable ...
R. A. Chalmers, A. M. Lawson
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Reaction gas chromatography/mass spectrometry
Mass Spectrometry Reviews, 1990The material reported in this review demonstrates the considerable utility of reaction GC/MS for the structure elucidation of organic compounds within mixtures. Of special interest is the possibility for the synthesis of isotopically labeled compounds directly in the course of analysis because it allows one to obtain new structurally informative ...
Anzor I. Mikaya, Vladimir G. Zaikin
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Introduction to Gas Chromatography-Mass Spectrometry
2013Gas chromatography-mass spectrometry (GC-MS) is a technique of pivotal importance for the analysis of hormones in biological fluids. In consequence, it has gained relevance in clinical and endocrinological laboratories, providing reference analytical methods.
Alberto, Sánchez-Guijo +2 more
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Gas chromatography—mass spectrometry
1990Combined gas chromatography—mass spectrometry (GC—MS) is probably the most comprehensive instrumental analytical technique available to the scientist in food analysis at present. The technique is well established in food science, and a predominant area of application is in food safety, where reliable information on food contaminants, e.g.
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Gas chromatography-mass spectrometry combinations
Journal of Physics E: Scientific Instruments, 1980Modern systems consist of 3 units: gas chromatography, mass spectrometry and data systems. The authors consider the operation of the 3 units independently and show the power of the combined system and its modes of operation.
A M Greenway, C F Simpson
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Combined Gas Chromatography-Mass Spectrometry
1979Before the advent of gas chromatography (GC) in 1952, fractional distillation was the most widely used analytical method based on volatilization of samples. Extremely refined distillation techniques had been developed, especially in the petroleum industry, but these had several important limitations. The power of separating compounds of closely similar
Charles J. W. Brooks, Charles G. Edmonds
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