Results 31 to 40 of about 94,683 (164)
Agricultura, 2009 This paper reports a multiresidue analytical method based on liquid-liquid extraction and capillary gas chromatography with electron-capture detection (LLE-GC-ECD). The determined analytes belong to two organochlorinated compound classes: polychlorinated
Mirela Miclean +4 more
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Determination of Alphacypermethrin in the Air by Capillary Gas Chromatography [PDF]
International Journal of Occupational Safety and Ergonomics, 1999 A new method for sampling and chemical analysis of alphacypermethrin in workplace air has been described. Air samples were taken using a glass tube filled with silica gel with chemically bounded octadecyl phase. Chromatographic determinations were conducted using an HP-5 capillary column (10 m x 0.53 mm) and an electron-capture detector ...
openaire +2 more sources
The Effect Analysis of Carrier Gas Flow Rate on the Rapid Gas Chromatographic Separation System
Applied Bionics and Biomechanics, 2020 Odor pollution did not only disturb the human normal life but also aroused the attention of environmental researchers and environmental protection departments.
Xu Zhang +3 more
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Identification of isomeric unsaturated medium-chain dicarboxylic acids in human urine.
Journal of Lipid Research, 1989 Dicarboxylic aciduria caused by enhanced or inhibited fatty acid metabolism is usually described as increased urinary excretion of saturated medium-chain dicarboxylic acids, such as adipic, suberic, and sebacic acids.
S J Jin, K Y Tserng
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Química Nova, 2007 The presence of illicit drugs such as cocaine and marijuana in US paper currency is very well demonstrated. However, there is no published study describing the presence of cocaine and/or other illicit drugs in Brazilian paper currency.
Enrico Di Donato +2 more
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Chemical Compositions and Tyrosinase Activity of the Essential Oils of
Natural Product Communications, 2018 The essential oils obtained from the fresh rhizome, leaf, and pseudostem of Alpinia aquatica Roscoe. were hydrodistillated and analyzed using capillary gas chromatography (GC) and gas chromatography-mass spectroscopy (GC-MS). β-Pinene (11.7%), α-humulene
Nissha Bharrathi Romes +4 more
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Molecules, 2020 An original gas chromatographic method has been developed for simultaneous determination of major terpenes and cannabinoids in plant samples and their extracts. The main issues to be addressed were the large differences in polarity and volatility between
Jure Zekič, Mitja Križman
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Analysis of bile acids in serum and bile by capillary gas-liquid chromatography.
Journal of Lipid Research, 1978 Various liquid phases for glass capillary columns have been evaluated for gas-liquid chromatographic analysis of methyl ester trimethylsilylether derivatives of bile acids from serum and bile.
G Karlaganis, G Paumgartner
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Chemical Composition and Antimicrobial Activity of Essential Oil of
Natural Product Communications, 2011 Cupressus atlantica Gaussen, an endemic species from Morocco, is used in traditional medicine. The chemical composition of the essential oil isolated by hydrodistillation from the leaves was investigated by capillary gas chromatography and gas ...
My Youssef Arjouni +3 more
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Регуляторные исследования и экспертиза лекарственных средств, 2019 The traditional gas-liquid chromatography (GLC) method using packed columns is still used in pharmaceutical analysis for determination of parabens, despite the fact that this technique has a number of serious drawbacks.The aim of the study was to develop
A. N. Ioutsi +4 more
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