Gas chromatographic system with controlled sample transfer

Details Gas chromatographic system with controlled sample transfer Gas chromatographic system with controlled sample transfer

1996-10-21

1998-01-27

Spitzer, Robert

Gas separation: processes

Chromatography

73 2325, 73 2342, 96102, 96103, 96105, B01D 1508

Patent

active

057117861

ABSTRACT:
In a gas chromatographic system that includes a column and an injector with a chamber, a carrier gas normally flows into the chamber at a constant rate, and a constant primary pressure is maintained at the column inlet. A sampling receptacle selectively communicates a sample vessel with a source of transfer gas or the chamber. The vessel is pressurized with the transfer gas to a starting pressure greater than the primary pressure. Analyte sample in transfer gas is then tranferred from the vessel to the chamber by the vessel pressure while the vessel pressure remains greater than the primary pressure. Carrier gas flow is discontinued during transfer, so that analyte sample transfers through the chamber into the column by the primary pressure linearly with time. Standby and venting states are provided.

REFERENCES:
patent: 3208230 (1965-09-01), Fourroux
patent: 3751966 (1973-08-01), Ryan et al.
patent: 3881892 (1975-05-01), Gehrke et al.
patent: 4180389 (1979-12-01), Paul
patent: 4237733 (1980-12-01), Kolb et al.
patent: 4464940 (1984-08-01), Pospisil
patent: 4476733 (1984-10-01), Chlosta et al.
patent: 4484483 (1984-11-01), Riegger et al.
patent: 4554436 (1985-11-01), Chlosta et al.
patent: 4773552 (1988-09-01), Boege et al.
patent: 4994096 (1991-02-01), Klein et al.
patent: 5108466 (1992-04-01), Klein et al.
patent: 5163979 (1992-11-01), Patrick et al.
patent: 5339673 (1994-08-01), Nakagawa et al.
patent: 5391221 (1995-02-01), Fukushima et al.
patent: 5403386 (1995-04-01), Collier et al.
patent: 5431712 (1995-07-01), Henderson et al.
patent: 5467635 (1995-11-01), Nakagawa et al.
patent: 5545252 (1996-08-01), Hinshaw et al.
patent: 5547497 (1996-08-01), Klemp et al.
patent: 5567227 (1996-10-01), Henserson
John V. Hinshaw, "The Effects of Inlet Liner Configuration and Septum Purge Flow Rate on Discrimination in Splitless Injection", vol. 16, Apr. 1993, Journal of High Resolution Chromatography, pp. 247-253.

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