Results 211 to 220 of about 314,068 (266)

Integrated Liquid Chromatography-Tandem Mass Spectrometry and Headspace Solid-Phase Microextraction With Gas Chromatography-Mass Spectrometry-based Profiling Reveals Developmental Metabolic Dynamics of Ligusticum striatum DC. [PDF]

J Sep Sci
Tung NKT, Nam NH, Nhiem NX, Dat NT, Kwon SW, Kang JS, Kim HM.   +6 more
europepmc   +1 more source

Gas Chromatography-Mass Spectrometry (GC-MS) in the Plant Metabolomics Toolbox: Sample Preparation and Instrumental Analysis. [PDF]

Biomolecules
Frolova N, Orlova A, Popova V, Bilova T, Frolov A.   +4 more
europepmc   +1 more source

Analysis of Illicit Street Heroin Seized in Pakistan by Gas Chromatography-Mass Spectrometry (GC-MS) for Identification of Adulterants and Impurities. [PDF]

Int J Anal Chem
Usman M, Baig Y, Naseer A, Nardiello D, Quinto M.   +4 more
europepmc   +1 more source

Simultaneous Determination of Aromatic Amines in Tattoo Ink by Gas Chromatography-Electron Ionization (GC-EI)-Mass Spectrometry (MS) and Tandem MS (MS/MS). [PDF]

Molecules
Shin E, Kim H, Choi J, Kang M, Shin J, Cha S.   +5 more
europepmc   +1 more source

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Gas Chromatography

Analytical Chemistry, 1998
This review of the fundamental developments in gas chromatography (GC) includes articles published from 1996 and 1997 and an occasional citation prior to 1996. The literature was reviewed principally using CA Selects for Gas Chromatography from Chemical Abstracts Service, and some significant articles from late 1997 may be missing from the review.
G A, Eiceman, H H, Hill, J, Gardea-Torresdey   +2 more
openaire   +3 more sources

Multidimensionality in gas chromatography

TrAC Trends in Analytical Chemistry, 1996
Many analytical problems require more resolution than a single chromatographic technique can provide. In such cases the separation power can be enhanced by using more than one separation technique or mechanism. The sample is then dispersed in different time dimensions.
de Geus, H.J., de Boer, J., Brinkman, U.A.Th.   +2 more
openaire   +3 more sources

Gas chromatography of flavonoids

Journal of Chromatography A, 1973
Abstract The gas chromatography of some trimethylsilyl ethers of flavonoids and glycosides was carried out using the OV series of silicone polymers as liquid phases, and useful correlations between the Kovats retention indices and the substituents in flavonoids in some crude drugs by temperature-programmed gas chromatography were devised.
Toyoshi Katagi, Akiko Horii, Yoshiko Oomura, Hisayo Miyakawa, Tamako Kyu, Yoko Ikeda, Koichiro Isoi, Masami Makita   +7 more
openaire   +2 more sources

Turbulent-Gas Chromatography

Science, 1966
Turbulent flow in gas chromatography was achieved and its effect was studied with high-speed, high-pressure equipment. A gas-solid capillary and several packed columns were used. The onset of turbulence was associated with abrupt decrease in peak width in the capillary and gradual leveling off and decrease in the packed columns.
J C, Giddings, W A, Manwaring, M N, Myers   +2 more
openaire   +2 more sources

Continuous Gas Chromatography

Science, 1967
Continuous gas chromatography has been achieved with a radial-flow chromatographic channel free of packing and formed between two closely spaced (50 to 75 microns) disc surfaces (optically flat and solvent-coated) rotating at one-half or one revolution per second. This technique provides high capacity and immediate response (in a fraction of a second).
M V, Sussman, C C, Huang
openaire   +2 more sources

Gas Chromatography

Analytical Chemistry, 1962
R S, Juvet, S, Dal Nogare
openaire   +3 more sources