4-t-Butylbenzylation of carboxylic acid for GC–MS analysis
SN Applied Sciences, 2020 We report a 4-t-butylbenzyl derivatization for the analysis of carboxylic acids by GC–MS (EI). Carboxylic acids were analyzed as a 4-t-butylbenzyl ester after the derivatization with 4-t-butylbenzyl bromide. On the mass spectra of 4-t-butylbenzyl ester, [
Shinji Tsunoi +5 more
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Molecules, 2020 The aroma profile is an important marker for wine quality. Various classes of compounds are responsible for the aroma of wine, and one such class is terpenoids. In the context of this work, a validated gas chromatography−mass spectrometry (GC−
Cody Williams, Astrid Buica
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Semi-automated non-target processing in GC × GC–MS metabolomics analysis: applicability for biomedical studies [PDF]
, 2010 Due to the complexity of typical metabolomics samples and the many steps required to obtain quantitative data in GC × GC–MS consisting of deconvolution, peak picking, peak merging, and integration, the unbiased non-target quantification of GC × GC–MS ...
AE Sinha +38 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 +3 more
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Enzymatic digestion and selective quantification of underivatised [delta]9-tetrahydrocannabinol and cocaine in human hair using gas chromatography-mass spectrometry. [PDF]
, 2012 Gas chromatography-mass spectrometric (GC-MS) methods for drug analysis routinely employ derivatising reagents. The aim of this paper was to develop a method for the analysis of two recreational drugs, delta-9-tetrahydrocannabinol ([delta](9)-THC) and ...
Barker, James +3 more
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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
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Determination of propofol by GC/MS and fast GC/MS-TOF in two cases of poisoning [PDF]
, 2017 Two cases of suspected acute and lethal intoxication caused by propofol were delivered by the judicial authority to the Department of Sciences for Health Promotion and Mother-Child Care in Palermo, Sicily.
Argo A. +8 more
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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 +3 more
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Study on Lavender Essential Oil Chemical Compositions by GC-MS and Improved pGC
Molecules, 2020 Lavender essential oil from the aerial parts of Lavandula angustifolia Mill. was analyzed by GC-MS equipped with three capillary columns of different polarities, which were HP-1, HP-5 ms and HP-INNOWax.
Guangyao Dong +4 more
semanticscholar +1 more source
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
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