Title:
AEROGEL ENVIRONMENTAL SAMPLER AND CONCENTRATOR
Document Type and Number:
WIPO Patent Application WO1999026464
Kind Code:
A3
Abstract:
Atmospheric samplers are disclosed using aerogel or other frangible filter material. The samplers include one or more cascaded impact sample stations (16) with discs of aerogel (20) as the targets. Ambient air carrying particulate matter is introduced into the sampler (10) and the particles are captured by the aerogel (20) in its pore structure. In certain embodiments, the aerogel filter (20) is next transported to a position (26) where it is fragmented by a spray of water. The fragmented aerogel (20) and the captured particles are transported (29) in the fragmenting water from the sampler for analyis. In one embodiment, the sampler (80) is segmented with alternate nozzle (86) and filter segments (90) for easy assembly, sampling and disassembly for analysis of the captured particles in aerogel filters (90AG) positioned below the nozzles (86N).
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Inventors:
BRENIZER JACK S
DAITCH CHARLES
HOSTICKA BOUVARD
MASON L ROGER JR
NORRIS PAMELA M
DAITCH CHARLES
HOSTICKA BOUVARD
MASON L ROGER JR
NORRIS PAMELA M
Application Number:
PCT/US1998/025214
Publication Date:
July 15, 1999
Filing Date:
November 25, 1998
Export Citation:
Assignee:
PACIFIC SIERRA RESEARCH CORP (US)
UNIV VIRGINIA (US)
UNIV VIRGINIA (US)
International Classes:
B01D45/08; G01N1/22; (IPC1-7): G01N1/00; B01D39/14; B01D45/04; B01D45/08; B01D50/00
Foreign References:
| US4387603A | 1983-06-14 | |||
| US5343767A | 1994-09-06 | |||
| US4570494A | 1986-02-18 | |||
| US4211116A | 1980-07-08 | |||
| US4725294A | 1988-02-16 | |||
| US3693457A | 1972-09-26 | |||
| US4640140A | 1987-02-03 | |||
| US4391151A | 1983-07-05 | |||
| US4827779A | 1989-05-09 |
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