Results 51 to 60 of about 181,345 (233)

Tauro-7 alpha, 12 alpha-dihydroxy-5 beta-cholanic acid as internal standard in the gas-liquid chromatographic analysis of bile acid methyl ester acetates.

Journal of Lipid Research, 1983
Tauro-7 alpha, 12 alpha-dihydroxy-5 beta-cholanic acid has been used as internal standard in the gas-liquid chromatographic analysis of bile acid methyl ester acetates.
Y Ghoos, P Rutgeerts, G Vantrappen
doaj  

Transesterification of phospholipids or triglycerides to fatty acid benzyl esters with simultaneous methylation of free fatty acids for gas-liquid chromatographic analysis.

Journal of Lipid Research, 1988
A novel method is presented for transesterification of fatty acid esters in phospholipids and triglycerides to benzyl esters while simultaneously recovering free fatty acids as methyl esters.
F J van Kuijk, D W Thomas, J P Konopelski, E A Dratz   +3 more
doaj  

Mars Spectrometry 2: Gas Chromatography -- Second place solution [PDF]

arXiv
The Mars Spectrometry 2: Gas Chromatography challenge was sponsored by NASA and run on the DrivenData competition platform in 2022. This report describes the solution which achieved the second-best score on the competition's test dataset. The solution utilized two-dimensional, image-like representations of the competition's chromatography data samples.
arxiv  

Gas-liquid partition chromatography: the separation of volatile aliphatic amines and of the homologues of pyridine [PDF]

, 1952
A. T. James
openalex   +1 more source

Evolution through time of Pyrrolizidine Alkaloids detection and quantification [PDF]

arXiv, 2013
Pyrrolizidine Alkaloids (PAs) are a group of naturally occurring alkaloids that are produced by plants as a defense mechanism against insect herbivores. The analytical methodologies employed for their detection have come a long way since the first analytical experiment and in the last 30 years had an enormous development, both technological and ...
arxiv  

Studies of sebum. 6. The determination of the component fatty acids of human forearm sebum by gas–liquid chromatography [PDF]

, 1956
A. T. James, Victor R. Wheatley
openalex   +1 more source

Chemical and toxicological analysis of zolpidem

RUDN Journal of Medicine, 2009
Methods for measuring zolpidem are suggested: thin-layer chromatography, high-pressure liquid chromatography, ultrtaviolet spectrophotometry, gas chromatography with mass selective detector can be used for identification zolpidem in chemical ...
Y A Khomov, E I Egorova, N V Koksharova, E A Shilova   +3 more
doaj  

ANALYTICAL FEATURES OF SYNTHETIC MDMB(N)-073F CANNABIMIMETICS AND ITS MARKERS IN BIOLOGICAL MATERIAL

Фармация и фармакология (Пятигорск), 2019
The aim of the research is to study both analytical features of synthetic MDMB(N)-073F cannabimimetics of indazole carboxamides group by gas chromatography methods combined with tandem mass spectrometry (GC-MS) and high performance liquid chromatography ...
S. S. Kataev, O. N. Dvorskaya, M. A. Gofenberg, A. V. Labutin, A. B. Melentyev   +4 more
doaj   +1 more source

Gas–liquid partition chromatography: the separation and micro-estimation of volatile fatty acids from formic acid to dodecanoic acid [PDF]

, 1955
J. H. Van De Kamer, K. W. Gerritsma, E. J. Wansink   +2 more
openalex   +1 more source

Peak Alignment of Gas Chromatography-Mass Spectrometry Data with Deep Learning [PDF]

arXiv, 2019
We present ChromAlignNet, a deep learning model for alignment of peaks in Gas Chromatography-Mass Spectrometry (GC-MS) data. In GC-MS data, a compound's retention time (RT) may not stay fixed across multiple chromatograms. To use GC-MS data for biomarker discovery requires alignment of identical analyte's RT from different samples.
arxiv