Results 111 to 120 of about 4,103,456 (328)
Química Nova, 2010 The objective of this study was to evaluate the use of the matrix solid-phase dispersion technique associated with purification at low temperature for the determination of pyrethroids in butter. Evaluated parameters included: sample/adsorbent ratio, type
Deyse de Brito Marthe +3 more
doaj +1 more source
Using EGA-GC to Analyze Nicotine N-oxide in Order to Explain Low Nicotine Concentrations in E-cigarette Liquids [PDF]
, 2018 Evolved-gas analysis coupled with gas chromatography (EGA-GC) was used to analyze e-cigarette liquids. Previous analyses of e-cigarette liquids have shown that the determined concentration of nicotine is lower than the advertised concentration.
Wuerch, Cory
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Gas Chromatography of Meprobamate
Clinical Chemistry, 1967 Abstract Rapid detection and precise quantitation of meprobamate in biologic fluid has been accomplished using the gas chromatograph. The method described has proved useful in elvaluating patients intoxicated by this sedative.
H. A. Bloomer, R. K. Maddock
openaire +3 more sources
Advanced Functional Materials, EarlyView.Internally catalyzed siloxane dynamic chemistry is demonstrated resulting from amides covalently linked through alkyl chains to siloxanes. The alkyl length in the siloxane‐containing monomer tunes the network cross‐link density. Siloxane exchange dynamics are faster with increasing cross‐link density, because associative exchange is second order in ...
Nathan S. Purwanto +5 more
wiley +1 more source
Separation of organochlorsilanes by preparative gas chromatography
Тонкие химические технологии, 2013 The preparative gas chromatography method has been used for isolation and analysis of the organochlorsilanes isomers. The reaction of the organochlorsilanes with vapour of the water in the air has been studied.
G. N. Turkeltaub, E. A. Chernyshev
doaj
Analytical methods used to determine pesticide residues in tea: A systematic review
Applied Food Research, 2022 Tea is a worldwide consumed beverage that is known for its variety of flavors and aroma, in addition to its antioxidant, antimicrobial, anti-carcinogenic, and anti-inflammatory properties.
Areej Merhi +3 more
doaj
Gas Chromatograph-quadrupole Mass Spectrometric Analysis of Organic Compounds [PDF]
Gas chromatography and mass spectrometry of acetonitrile, furan, pyrrole, paraffins, and other aromatic organic compounds of biological ...
Oro, J., Updegrove, W. S., Zlatkis, A.
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Ternary Synergy in Layered Double Hydroxides for Efficient and Stable Nitrate Reduction
Advanced Functional Materials, EarlyView.Ternary CuZnFe LDH enables efficient electrocatalytic nitrate‐to‐ammonia conversion via controlled in situ reconstruction: zinc leaching creates porous active sites, copper reduced to metallic copper, while iron oxide keeps stable. Synergistic Cu‐Fe redox coupling drives tandem catalysis (nitrate→nitrite→NH3), achieving 95% Faraday efficiency and ...
Jiaqian Kang +9 more
wiley +1 more source
Hydrocarbons in the banana leaf, Musa sapientum [PDF]
Mass spectrometry, spectroscopy, and thin layer and gas chromatography studies of hydrocarbons in banana ...
Modzeleski, V. +2 more
core +1 more source