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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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Combination gas chromatography‐mass spectrometry
Journal of the American Oil Chemists' Society, 1967AbstractThe direct combination of gas‐liquid chromatography with mass spectrometry represents one of the most powerful techniques available for the analysis of complex mixtures of lipids. Principal advantages are the extremely small amounts of material required, the relative speed of analysis, and the wealth of molecular structural information ...
F. A. J. M. Leemans, James A. McCloskey
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Analytical Chemistry, 2008
Successful application of the Hadamard transform (HT) technique to gas chromatography/mass spectrometry (GC/MS) and liquid chromatography/mass spectrometry (LC/MS) is described. Novel sample injection devices were developed to achieve multiple sample injections in both GC and LC instruments. Air pressure was controlled by an electromagnetic valve in GC,
Hung Ming Chen +5 more
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Successful application of the Hadamard transform (HT) technique to gas chromatography/mass spectrometry (GC/MS) and liquid chromatography/mass spectrometry (LC/MS) is described. Novel sample injection devices were developed to achieve multiple sample injections in both GC and LC instruments. Air pressure was controlled by an electromagnetic valve in GC,
Hung Ming Chen +5 more
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Journal of Chromatography A, 2004
Pyrolysis (Py) with in situ derivatisation with hexamethyldisilazane-gas chroma-break tography-mass spectrometry (GC-MS) and a gas chromatography-mass spectrometry procedure based on microwave-assisted saponification were used to identify the organic components in small sized beeswax samples.
BONADUCE, ILARIA, COLOMBINI, MARIA PERLA
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Pyrolysis (Py) with in situ derivatisation with hexamethyldisilazane-gas chroma-break tography-mass spectrometry (GC-MS) and a gas chromatography-mass spectrometry procedure based on microwave-assisted saponification were used to identify the organic components in small sized beeswax samples.
BONADUCE, ILARIA, COLOMBINI, MARIA PERLA
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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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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.
Stefan A. Wudy +2 more
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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 ...
Mikaya Anzor I, Vladimir G. Zaikin
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Gas Chromatography–Mass Spectrometry of Biofluids and Extracts [PDF]
, 2015 Gas chromatography-mass spectrometry (GC-MS) has been widely used in metabonomics analyses of biofluid samples. Biofluids provide a wealth of information about the metabolism of the whole body and from multiple regions of the body that can be used to study general health status and organ function.
Najeh M. Kharbatia +3 more
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Combined Gas Chromatography-Mass Spectrometry [PDF]
, 1979 Before 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 G. Edmonds, Charles J. W. Brooks
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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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