Results 1 to 10 of about 208,364 (208)

Separation performance of PEG-linked calix[4]arene as stationary phase for capillary gas chromatography [PDF]

Química Nova, 2023
This work presented a new PEG modified calix[4]arene stationary phase (C4A-PEG-2PTSC) for gas chromatographic (GC) separations. The statically coated C4A-PEG-2PTSC column exhibited moderate polarity and column efficiency of 2224 plates m-1 determined by ...
Wei Zhang, Zhiqiang Cai, Wei Li, Qiuchen Huang, Ruonan Chen, Yiwen Li, Keyun Jin, Yi Zhao, Tao Sun   +8 more
doaj   +1 more source

Analysis of α-lipoprotein cholesterol in 50 μl of plasma

Journal of Lipid Research, 1974
A micromethod for quantitation of α-lipoprotein cholesterol was devised for gas–liquid chromatography to minimize plasma sample size and facilitate lipid studies using capillary blood from children or small animals. α-Lipoprotein cholesterol was measured
R.F. Lutmer, D. Parsons, C.J. Glueck, J.A. Morrison, L. Stewart, J.B. Brazier, C.R. Buncher, T.T. Ishikawa   +7 more
doaj   +1 more source

Accelerated gas-liquid visible light photoredox catalysis with continuous-flow photochemical microreactors [PDF]

, 2016
In this protocol, we describe the construction and use of an operationally simple photochemical microreactor for gas-liquid photoredox catalysis using visible light.
A Günther, A Talla, AE Cassano, CK Prier, DP Hari, DT McQuade, F Trachsel, J Yue, KG Maskill, MN Kashid, Natan J W Straathof, NJW Straathof, NJW Straathof, NJW Straathof, P Angeli, RL Hartman, S Fukuzumi, S Ghafoori, T Noël, Timothy Noël, Volker Hessel, W Li, Y Su, Y Su, Y Zhang, Yuanhai Su, ZJ Garlets   +26 more
core   +3 more sources

Rapid determination of methylmercury in fish tissues

Czech Journal of Food Sciences, 2006
The aim of the present study was to develop a rapid and inexpensive method for the determination of methylmercury in fish tissues based on GC/ECD instrumentation.
Petr Maršálek, Zdeňka Svobodová
doaj   +1 more source

Recent developments in the rapid analysis of plants and tracking their bioactive constituents [PDF]

, 2009
Natural products chemistry has witnessed many new developments in the last 5 years like extractions with subcritical water and ionic liquids, LC/HRMS and LC/SPE/cryo-NMR, UHPLC, TLC/MS, MS-based preparative HPLC, comprehensive chromatography (GC × GC, LC
Beek, T.A., van, Claassen, F.W., Dapkevicius, A., Exarchou, V., Jeurissen, S.M.F., Klift, E.J.C., van der, Koleva, I., Tetala, K.K.R.   +7 more
core   +2 more sources

Determination of lipid content and fatty acid representation in barley caryopses and malt.

Kvasný průmysl, 2009
The modern method of extraction on the fluidized bed was optimized for the determination of lipids in barley caryopses and malt. Representation of fatty acids in barley caryopsis and malt was determined from extracted lipids.
Zdeněk SVOBODA, Renata MIKULÍKOVÁ, Sylvie BĚLÁKOVÁ, Karolína BENEŠOVÁ, Zdeněk NESVADBA   +4 more
doaj   +1 more source

Determination of gamma-hydroxybutyric acid in dried blood spots using a simple GC-MS method with direct 'on spot' derivatization [PDF]

, 2010
The objective of this study was the development of an accurate and sensitive method for the determination of gamma-hydroxybutyric acid (GHB) in dried whole blood samples using a GC-MS method.
Ingels, Ann-Sofie, Lambert, Willy, Stove, Christophe   +2 more
core   +1 more source

Separation of mono-, di-, and trihydroxy stereoisomers of bile acids by capillary gas-liquid chromatography

Journal of Lipid Research, 1983
Capillary gas-liquid chromatographic separation was studied for the complete set of the 26 theoretically possible isomers of mono-, di-, and trihydroxylated 5 beta-cholanic acids, which differ from one another in the number, position, and configuration ...
T Iida, F C Chang, T Matsumoto, T Tamura
doaj   +1 more source

Capillary Electrophoresis Mass Spectrometry-Based Metabolomics of Plasma Samples from Healthy Subjects in a Cross-Sectional Japanese Population Study

Metabolites, 2021
For large-scale metabolomics, such as in cohort studies, normalization protocols using quality control (QC) samples have been established when using data from gas chromatography and liquid chromatography coupled to mass spectrometry.
Hiroyuki Yamamoto, Makoto Suzuki, Rira Matsuta, Kazunori Sasaki, Moon-Il Kang, Kenjiro Kami, Yota Tatara, Ken Itoh, Shigeyuki Nakaji   +8 more
doaj   +1 more source

Analytical Separation of Carcinogenic and Genotoxic Alkenylbenzenes in Foods and Related Products (2010–2020)

Toxins, 2021
Alkenylbenzenes are potentially toxic (genotoxic and carcinogenic) compounds present in plants such as basil, tarragon, anise star and lemongrass. These plants are found in various edible consumer products, e.g., popularly used to flavour food.
Huynh N. P. Dang, Joselito P. Quirino
doaj   +1 more source