Results 21 to 30 of about 209,682 (308)

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

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

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

An optimized analytical method for the simultaneous detection of iodoform, iodoacetic acid, and other trihalomethanes and haloacetic acids in drinking water [PDF]

, 2013
An optimized method is presented using liquid-liquid extraction and derivatization for the extraction of iodoacetic acid (IAA) and other haloacetic acids (HAA9) and direct extraction of iodoform (IF) and other trihalomethanes (THM4) from drinking water ...
He, G, Jiang, S, Liu, X, Qu, W, Templeton, MR, Wei, X, Zheng, W   +6 more
core   +3 more sources

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

Population Diversity of n–Alkanes in the Needle Cuticular Wax of Relicts Pinus heldreichii and P. peuce from the Scardo-Pindic Mountains

Macedonian Journal of Chemistry and Chemical Engineering, 2020
The variability of n-alkanes in the needle cuticular wax of Pinus heldreichii and P. peuce in two natural populations from the Scardo-Pindic mountains was investigated for the first time.
Biljana M. Nikolić, Iris Đorđević, Marina Todosijević, Zorica Mitić, Srdjan Bojović, Petar D. Marin   +5 more
doaj   +1 more source

Applications of Direct Injection Soft Chemical Ionisation-Mass Spectrometry for the Detection of Pre-blast Smokeless Powder Organic Additives [PDF]

, 2019
Analysis of smokeless powders is of interest from forensics and security perspectives. This article reports the detection of smokeless powder organic additives (in their pre-detonation condition), namely the stabiliser diphenylamine and its derivatives 2-
A Jordan, A Zeichner, B Agarwal, B Gilbert-López, C Cruces-Blanco, C Shen, C West, CA Mayhew, CM Mahoney, D Laza, D-MK Dennis, E Bernal Morales, E Goudsmits, F Biasioli, F Li, G Scherperel, H Meng, H-h Meng, J Bueno, JJ Perez, JJ Perez, JL Thomas, KH Chang, KL Reese, M Joshi, M Joshi, M López-López, M López-López, M Mach, M Morelato, M Zhao, O Cascio, O Dalby, P Sulzer, P Sulzer, R González-Méndez, R González-Méndez, R González-Méndez, RV Taudte, S Jürschik, W Lindinger, WA MacCrehan, WA MacCrehan, Y Tong, Z Abrego, Z Wu   +45 more
core   +2 more sources

Chemical derivatization processes applied to amine determination in samples of different matrix composition [PDF]

, 2015
No abstract ...
Biziuk, Marek, Morrison, Calum, Namieśnik, Jacek, Płotka-Wasylka, Justyna M.   +3 more
core   +1 more source

Analysis of serum bile acids by capillary gas–liquid chromatography–mass spectrometry.

Journal of Lipid Research, 1980
A method for quantitative analysis of serum bile acids by capillary gas–liquid chromatography–mass spectrometry is described. The main features of this method are a Grob-type barium carbonate/polyethyleneglycol 20,000 glass capillary column, an all-glass
G Karlaganis, R P Schwarzenbach, G Paumgartner   +2 more
doaj   +1 more source