Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1983-09-15
1984-10-16
Adee, John
Gas separation
Means within gas stream for conducting concentrate to collector
55197, B01D 1508
Patent
active
044772661
ABSTRACT:
A solute focusing method is applied to the on-column injection of a liquid sample in gas chromatography so that relatively large sample sizes can be used without causing intolerable column flooding. The injection zone of the column is kept originally at a temperature below the solvent boiling point but the temperature in the adjacent downstream zone is kept higher than the solvent boiling point so that the solvent will evaporate and flow downstream, leaving the solute molecules concentrated within a relatively limited length along the column.
REFERENCES:
patent: 4269608 (1981-05-01), Sisti et al.
patent: 4422860 (1983-12-01), Feinstein
Capillary Gas Chromatographic Injection System for Large Sample Volumes-W. Vogt et al. Jrnl. of Chromatography, 186, (1979), 197-205.
Sampling Method in Capillary Column Gas-Liquid Chromatography Allowing Injections of up to 250. Jrn. Chromatography, 174, (1979), 437-439.
On-Column Injection on to Glass Capillary Columns--K. Grob et al., Journal of Chromatography, 151, (1978), 311-320.
Automatic Injection in High-Resolution Gas Chromatography: A Programmed Temperature Vaporizer as a General Purpose Injection System Journal of Chromatography, 217, (1981), 81-90, F. Poy et al.
Hinshaw, Jr. John V.
Yang Frank J.
Adee John
Cole Stanley Z.
Nishimura Keiichi
Varian Associates Inc.
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