Results 1 to 10 of about 94,683 (164)

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

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

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

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

Bottom-up synthesis of chiral covalent organic frameworks and their bound capillaries for chiral separation

Nature Communications, 2016
Porous materials can be used in columns for gas separation applications. Here, Yan and co-workers from a bottom-up method have produced chiral covalent organic frameworks and from an in situ strategy formed capillary columns for chiral gas chromatography.
Hai-Long Qian, Cheng-Xiong Yang, Xiu-Ping Yan   +2 more
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Cholesteric Liquid Crystalline Copolymers for Gas Chromatographic Separation of Polycyclic Aromatic Compounds

Advances in Materials Science and Engineering, 2012
A novel series of side-chain liquid crystalline copolysiloxanes containing [S]-1-(2-naphthyl) ethyl 6-[4-(10-undecen-1-yloxy) biphenyl--carbonyloxy]-2-naphthoate mesogenic and 4-biphenyl -allyloxybenzoate mesogenic side groups in the backbone and side ...
Chih-Hung Lin
doaj   +1 more source

Cromatografia gasosa bidimensional abrangente (GC × GC) Comprehensive two-dimensional gas chromatography (GC × GC)

Química Nova, 2009
This paper presents the fundamental principles, instrumentation and selected applications of comprehensive two-dimensional gas chromatography (GC × GC).
Marcio Pozzobon Pedroso, Luiz Antonio Fonseca de Godoy, Carlos Henrique de Vasconcellos Fidélis, Ernesto Correa Ferreira, Ronei Jesus Poppi, Fabio Augusto   +5 more
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

Arachidonate epoxygenase: identification of epoxyeicosatrienoic acids in rabbit kidney.

Journal of Lipid Research, 1987
Epoxyeicosatrienoic acids were isolated and purified from female rabbit kidneys. They were identified as a group, prior to resolution, by packed column gas-liquid chromatography-mass spectroscopic techniques as their methyl esters as well as their ...
J R Falck, V J Schueler, H R Jacobson, A K Siddhanta, B Pramanik, J Capdevila   +5 more
doaj   +1 more source