Method and device for sample injection under controlled conditio

Details Method and device for sample injection under controlled conditio Method and device for sample injection under controlled conditio

1979-08-02

1981-05-26

Adee, John

Gas separation

Means within gas stream for conducting concentrate to collector

55197, 73422GC, B01A 1508

Patent

active

042696089

ABSTRACT:
A method and device for sample injections into a gas chromatographic column, wherein, in order to achieve sample trapping and solvent effects, the injection zone and an initial portion of the column are kept at a low temperature and then a quick temperature change is performed at the end of said initial portion. The cooling action is preferably performed by a cooling fluid acting outside the injector and column, while said temperature change is obtained by a suitable thermoregulation of the oven wherein said gas chromatographic column is housed.

REFERENCES:
patent: 3719084 (1973-03-01), Walker
patent: 3841059 (1974-10-01), McCabe
patent: 4123236 (1978-10-01), Hirschfeld
Sampling Techniques in Capillary Gas Chromatography by Schomburg et al., in Journal of Chromatography, 142 (1977), 87-102.
Aspects of Double Column Gas Chromatography with Glass Capillaries Involving Intermediate Trapping, by Schomburg et al., 112 (1975), 205-217.
Gas Phase Chromatography, vol. 1, by Kaiser, Butterworth Pub., Washington, D.C., p. 97, 1963.

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