Results 11 to 20 of about 1,984,718 (292)

Inter-laboratory reproducibility of fast gas chromatography-electron impact-time of flight mass spectrometry (GC-EI-TOF/MS) based plant metabolomics [PDF]

, 2009
The application of gas chromatography¿mass spectrometry (GC¿MS) to the `global¿ analysis of metabolites in complex samples (i.e. metabolomics) has now become routine.
Dunn, Warwick, Luedemann, A., Lüdemann, A., Arjen Lommen, Goodacre, R., Lommen, Arjen, Lorraine Kay, Dunn, Warwick B., Joachim Kopka, Allwood, J. William, de Koning, S., Erban, Alexander, Kay, Lorraine, Sjaak de Koning, Ralf Löscher, Erban, A., Alexander Erban, Royston Goodacre, de Koning, Sjaak, Löscher, R., Goodacre, Royston, Allwood, J., Kay, L., Allwood, J.W., Dun, W.B., Lommen, A., Kopka, J., Koning, S., Alexander Luedemann, Dunn, W. B., Allwood, J. W., J. William Allwood, Luedemann, Alexander, Dunn, Warwick B, Dunn, W., Kopka, Joachim, Allwood, James, Löscher, Ralf, Warwick B. Dunn   +38 more
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Detection of Δ9-tetrahydrocannabinol (THC) in hair using GC–MS

Egyptian Journal of Forensic Sciences, 2014
Detection of drugs from hair samples has become an imperative technique in forensic toxicological analysis. In this study, hair samples were collected from 20 cannabis users undergoing treatment at a rehabilitation center at different time intervals ...
Himanshu Khajuria, Biswa P. Nayak
doaj   +1 more source

Fluxome analysis using GC-MS

Microbial Cell Factories, 2007
Fluxome analysis aims at the quantitative analysis of in vivo carbon fluxes in metabolic networks, i. e. intracellular activities of enzymes and pathways.
Wittmann Christoph
doaj   +1 more source

Comparison of GC/time-of-flight MS with GC/quadrupole MS for halocarbon trace gas analysis [PDF]

Atmospheric Measurement Techniques, 2015
We present the application of time-of-flight mass spectrometry (TOF MS) for the analysis of halocarbons in the atmosphere after cryogenic sample preconcentration and gas chromatographic separation.
J. Hoker, F. Obersteiner, H. Bönisch, A. Engel   +3 more
doaj   +1 more source

Optimising a urinary extraction method for non-targeted GC–MS metabolomics

Scientific Reports, 2023
Urine is ideal for non-targeted metabolomics, providing valuable insights into normal and pathological cellular processes. Optimal extraction is critical since non-targeted metabolomics aims to analyse various compound classes.
Cara Olivier, Bianca Allen, Laneke Luies
doaj   +1 more source

GC-MS chromatogram.

, 2022
GC-MS chromatogram.
Sarthak Mishra (12369590), Preeti Srivastava (3392114), Manoj Kumar (205700), Arif Nissar Zargar (11404569)   +3 more
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Determination of 9 halogenated alkanes in toothpaste by GC⁃MS

Shanghai yufang yixue, 2023
ObjectiveTo establish a GC-MS method for the detection of 9 halogenated alkanes in toothpastes.MethodsVarious brands of toothpastes on the market were collected as the samples. Methanol was used as the extraction solution.
PENG Qian, LIN Xi, WU Linying, XUAN Dongliang   +3 more
doaj   +1 more source

Flavor volatiles evolution of Chinese horse bean-chili-paste during ripening, accessed by GC×GC-TOF/MS and GC-MS-olfactometry

International Journal of Food Properties, 2020
The evolution of volatile compounds during the ripening of Chinese horse bean-chili-paste (CHCP) was investigated in this study. GC×GC-TOF/MS allowed an identification of 748 volatiles in three CHCP samples, respectively, ripened for 3 months (M3), 12 ...
Yunhao Lu, Xinyi Tan, Yuanping Lv, Guohua Yang, Yuanlong Chi, Qiang He   +5 more
doaj   +1 more source

Drying Enhances Signal Intensities for Global GC–MS Metabolomics

Metabolites, 2019
We report here that a straightforward change of the standard derivatization procedure for GC–MS metabolomics is leading to a strong increase in metabolite signal intensity.
Manuel Liebeke, Erik Puskás
doaj   +1 more source

GC-MS of bio-oil.

, 2023
GC-MS of bio-oil.
Chao Li (145513), Jianmin Chang (519328), Defu Bao (11167128), Yuxiang Yu (2301502), Xiaoqian Qiu (12894285)   +4 more
core   +1 more source