Results 21 to 30 of about 313,673 (292)
Microbial Metabolomics with Gas Chromatography/Mass Spectrometry [PDF]
Analytical Chemistry, 2006 An analytical method was set up suitable for the analysis of microbial metabolomes, consisting of an oximation and silylation derivatization reaction and subsequent analysis by gas chromatography coupled to mass spectrometry. Microbial matrixes contain many compounds that potentially interfere with either the derivatization procedure or analysis, such ...
Koek, M.M. +3 more
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Simultaneous Determination of 20 Pyrazines in Baijiu by Gas Chromatography-Tandem Mass Spectrometry [PDF]
Shipin KexueIn this study, a method for the simultaneous determination of 20 pyrazines in baijiu was established by direct injection (DI) combined with gas chromatography-tandem mass spectrometry (GC-MS/MS), and the pyrazines in 10 brands of baijiu with different ...
WANG Na, SHEN Yi, ZHUANG Yuan, CHENG Wei, LUO Sen, ZHANG Yadong, LIU Zixuan, LIU Bing, GAO Hongbo
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Toxics, 2022 Flame retardants are added to consumer products to retard the ignition of combustible materials. Technical mixtures of polybrominated diphenyl ethers (PBDEs) and hexabromocyclododecane (HBCDD) were massively used for several decades.
Eva Lipičar +3 more
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Gas Chromatography-Mass Spectrometry [PDF]
, 1971 In choosing a method by which to identify drug metabolites, the quantity of material which is available is a prime consideration. In this regard, pharmacologists find themselves midway between natural products chemists and biochemists. Usually the former has reasonably large quantities of material available in a relatively high state of purity.
A. M. Guarino, H. M. Fales
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Gas Chromatography-Mass Spectrometry
, 2014 This chapter provides a basic introduction to the technical and practical basics of coupling gas chromatography with mass spectrometry (GC-MS), and it will touch on major applications where GC-MS techniques are essential parts of analytical protocols.
Elena E. Stashenko +1 more
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Gas Chromatography-Mass Spectrometry of Volatile Organic Impurities in Whiskey
Техника и технология пищевых производств, 2022 Alcoholic beverages are complex multicomponent objects. Their quality and safety control is a serious analytical task that requires new, more accurate instrumental methods, e.g., chromatography-mass spectrometry.
Nataliya V. Shelekhova +3 more
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Frontiers in Nutrition, 2023 BackgroundThe misuse of animal-derived stimulants in food is becoming increasingly common, and mass spectrometry (MS) is used extensively for their detection and analysis.
Qiang Zhang, Hongying Du, Yingjian Zhang
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Molecules, 2023 The concentration of polycyclic aromatic hydrocarbons (PAHs) in the atmosphere has been continually monitored since their toxicity became known, whereas nitro-PAHs (NPAHs) and oxy-PAHs (OPAHs), which are derivatives of PAHs by primary emissions or ...
Jungmin Jo +5 more
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Duvatrienediols in cuticular wax of Burley tobacco leaves
Journal of Lipid Research, 1976 4, 8, 13-Duvatriene-1, 3-diol diastereoisomers have been identified in the cuticular wax of fresh Burley tobacco leaves. Their structures were determined by gas-liquid chromatography, mass spectrometry, and infrared and ultraviolet spectroscopy ...
S Y Chang, C Grunwald
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Pots and lipids: molecular and isotope evidence of the food processing at Maharski prekop
Documenta Praehistorica, 2012 The pottery assemblage from the Maharski prekop site was analysed to obtain insights into vessel use and husbandry practices. Total lipid extracts of pottery samples were subjected to gas chromatography (GC), gas chromatography–mass spectrometry (GC–MS),
Nives Ogrinc +4 more
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