Process and apparatus for determining the quality of impurities

Details Process and apparatus for determining the quality of impurities Process and apparatus for determining the quality of impurities

1990-09-24

1992-10-06

Williams, Hezron E.

Measuring and testing

Gas analysis

Gas chromatography

73 2335, 73 2342, 73 2339, 55197, 55 67, 422 89, G01N 3008, B01D 1308

Patent

active

051521768

ABSTRACT:
The apparatus for determining the quantity of impurity in a gas by chromatography in gas phase comprises a device for cryogenically trapping impurities, which is provided with a column filled with granular particles of a product capable of adsorbing the impurities, refrigerating means capable of keeping the column at low temperature during passage of the gas loaded with impurities and reheating means for an ulterior desorption;

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patent: 4454043 (1984-06-01), Ting et al.
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Soviet Inventions Illustrated, Sep. 23, 1987, semaine 8737, abrege No. 87-262535/37, E37-J04-S03, Derwent Publications Ltd., Lonres, GB; & Su-A-12 86988 (Rezchikov V. G.) Jul. 12, 1984.

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