Enhanced sensitivity for oxygen and other interactive gases in s

Details Enhanced sensitivity for oxygen and other interactive gases in s Enhanced sensitivity for oxygen and other interactive gases in s

1996-02-14

1997-03-18

Brock, Michael

Measuring and testing

Gas analysis

Gas chromatography

73 2342, 422 89, G01N 3034

Patent

active

056124899

ABSTRACT:
The present invention is directed to a method of detecting trace levels of contained interactive gas, such as oxygen, in gases containing trace levels of interactive gas, such as oxygen, by doping a known low level amount of interactive gas (i.e., oxygen) into the detection apparatus to saturate interactive gas reactive or adsorptive sites in the apparatus, thus allowing the accurate, reproducible and responsive detection of contained interactive gas. More particularly, the present invention dopes a carrier gas of a gas chromatograph with low levels of oxygen in order to detect contained trace oxygen in a sample of a gas being analyzed for contained trace oxygen.

REFERENCES:
patent: 3319458 (1967-05-01), Curren
patent: 4713362 (1987-12-01), Maroulis et al.
patent: 4744805 (1988-05-01), Maroulis et al.
patent: 4747854 (1988-05-01), Maroulis et al.

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