Gas chromatograph apparatus for a liquid sample containing a sol

Details Gas chromatograph apparatus for a liquid sample containing a sol Gas chromatograph apparatus for a liquid sample containing a sol

1996-05-15

1997-09-30

Williams, Hezron E.

Measuring and testing

Gas analysis

With compensation detail

73 2341, 73 2342, G01N 3004

Patent

active

056728107

ABSTRACT:
A gas chromatograph for analyzing a selected target component in a liquid sample, which also contains a solvent, has a sample injection port, a temperature control unit, a split ratio control unit and a vaporization control unit. The sample injection port contains a pre-column filled with a packing material capable of holding a liquid sample injected into the pre-column. The sample injection port has a carrier gas inlet, a split vent, and an opening connected to a column. The temperature control unit is for controlling temperature of the sample injection port, and the split ratio control unit is for controlling the split ratio, defined as the ratio between gas flow rate to the column and the rate of the gas being discharged through the split vent. The vaporization control unit serves to control both the temperature control unit and the split control unit in coordination with each other according to the boiling points of the target component and the solvent in the liquid sample.

REFERENCES:
patent: 3057183 (1962-10-01), De Ford
patent: 3327520 (1967-06-01), Stapp, Jr.
patent: 4805441 (1989-02-01), Sides et al.
patent: 5339673 (1994-08-01), Nakagawa et al.
patent: 5347844 (1994-09-01), Grob et al.
patent: 5467635 (1995-11-01), Nakagawa et al.
patent: 5524084 (1996-06-01), Wang et al.
patent: 5545252 (1996-08-01), Hinshaw et al.

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