Title:
DENUDER ASSEMBLY FOR COLLECTION AND REMOVAL OF SOLUBLE ATMOSPHERIC GASES
Document Type and Number:
WIPO Patent Application WO2005022059
Kind Code:
A3
Abstract:
A denuder assembly is adapted for the collection and removal of a gaseous analyte from a sample gas. The denuder includes a housing including an internal cavity, a sample gas inlet fluidly coupled with a sample gas source, a denuder liquid inlet fluidly coupled with a denuder liquid source, a barrier sheet extending across the internal cavity and separating the internal cavity into a liquid reservoir and a gas flow-through channel fluidly coupled with and downstream of the sample gas inlet, the barrier sheet having a liquid-reservoir surface and a gas-channel surface and being porous to gas and liquid; and a denuder liquid disposed in the liquid reservoir and permeating the barrier sheet to coat the gas-channel surface of the barrier sheet thereby allowing the denuder liquid on the gas-channel surface to contact the sample gas flowing within the gas flow-through channel and allowing the analyte to diffuse through the barrier sheet into the liquid reservoir. A method of using the denuder assembly for collection and removal of soluble atmospheric gases is also disclosed.
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Inventors:
DASGUPTA PURNENDU K (US)
MORRIS KAVIN J (US)
LI JIANZHONG (US)
MORRIS KAVIN J (US)
LI JIANZHONG (US)
Application Number:
PCT/US2004/027314
Publication Date:
June 16, 2005
Filing Date:
August 19, 2004
Export Citation:
Assignee:
DIONEX CORP (US)
DASGUPTA PURNENDU K (US)
MORRIS KAVIN J (US)
LI JIANZHONG (US)
DASGUPTA PURNENDU K (US)
MORRIS KAVIN J (US)
LI JIANZHONG (US)
International Classes:
B01D53/22; G01N1/22; G01N1/34; (IPC1-7): B01D53/22; B01D41/00; B01D46/00; B01D47/00; B01D53/02; B01D53/14; B01D59/12; G01N7/00
Foreign References:
US6156096A | 2000-12-05 | |||
US5302191A | 1994-04-12 | |||
US5281254A | 1994-01-25 | |||
US4750918A | 1988-06-14 |
Other References:
See also references of EP 1667784A4
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