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Gas chromatography of flavonoids
Journal of Chromatography A, 1973Abstract 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 +7 more
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Multidimensionality in gas chromatography
TrAC Trends in Analytical Chemistry, 1996Many 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. +2 more
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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 +2 more
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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 +2 more
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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
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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
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Biomedical Instrumentation & Technology, 2012
Overview All forms of chromatography separate components of a mixture by taking advantage of the fact that each component has a different affinity for a particular media. Both liquid and gas chromatographs use this principle and employ two different media—a sorbent-packed column and a solvent (termed the stationary phase and the mobile phase)—to ...
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Overview All forms of chromatography separate components of a mixture by taking advantage of the fact that each component has a different affinity for a particular media. Both liquid and gas chromatographs use this principle and employ two different media—a sorbent-packed column and a solvent (termed the stationary phase and the mobile phase)—to ...
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Talanta, 1967
The history of process gas chromatography is described briefly, followed by a description of the essential details of process gas Chromatograph systems. The economics of process analysers are contrasted with those of laboratory instruments, and the application of process analysers to automatic control systems, process control computers and data loggers
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The history of process gas chromatography is described briefly, followed by a description of the essential details of process gas Chromatograph systems. The economics of process analysers are contrasted with those of laboratory instruments, and the application of process analysers to automatic control systems, process control computers and data loggers
openaire +2 more sources