Results 21 to 30 of about 459,634 (341)
Analytical Chemistry, 2009 At least two independent parameters are necessary for compound identification in metabolomics. We have compiled 2 212 electron impact mass spectra and retention indices for quadrupole and time-of-flight gas chromatography/mass spectrometry (GC/MS) for ...
T. Kind +6 more
semanticscholar +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
openaire +2 more sources
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
openaire +6 more sources
Carbohydrate Polymer Technologies and Applications, 2023 Oligosaccharides play a central role in plants and are involved in basal metabolism, and many other functions at cellular levels. Indeed, oligosaccharides analysis was stimulated by the development of analytical chemistry and computational biology and ...
Noureddine Benkeblia
doaj
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
doaj +1 more source
Gas Chromatography Mass Spectrometry
Definitions, 2020 An analytical technique wherein gas chromatography is coupled to mass spectrometry in order to separate, identify, and quantify substances in a sample.
R. Hites
semanticscholar +1 more source
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
doaj +1 more source
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
doaj +1 more source