Vented capillary gas chromatography apparatus

Details Vented capillary gas chromatography apparatus Vented capillary gas chromatography apparatus

1993-08-25

1994-08-16

Housel, James C.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing gas sample

73 2342, 96105, 436161, G01N 3000

Patent

active

053385144

ABSTRACT:
Method and apparatus for gas chromatography/mass spectroscopy including a retention gap, a capillary gas chromatography column and a mass spectrometer, the improvement being a valve that facilitates temporarily venting the carrier gas from between the retention gap and the capillary gas chromatography column immediately after the injection of a sample. The valve also facilitates an alternate flow of carrier gas into the mass spectrometer during the venting operation.

REFERENCES:
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patent: 4305906 (1981-12-01), Mikasa et al.
patent: 4500432 (1985-02-01), Poole et al.
patent: 4553985 (1985-11-01), Dahlgren et al.
patent: 4588422 (1986-05-01), Raimond
patent: 5034193 (1991-07-01), Maroulis et al.
patent: 5049509 (1991-09-01), Szakasits et al.
patent: 5152176 (1992-10-01), Bryselbont et al.

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