Joan M Daisey

Author:

Joan M. Daisey

ISBN #:

0873710576

US Patent:

6780818, Aug 24, 2004

Filed:

Apr 10, 2001

Appl. No.:

09/832755

Inventors:

Lara Gundel - Berkeley CA
Joan M. Daisey - Walnut Creek CA
Robert K. Stevens - Raleigh NC

Assignee:

The Regents of the University of California - Oakland CA

International Classification:

B01J 2026

US Classification:

502402

Abstract:

The present invention concerns a quantitative organic vapor-particle sampler which can efficiently sample both semi-volatile organic gases and particulate components through the use of a unique sorbent resin coating and process. The sampler of the present invention comprises in its broadest aspect a tubular device having an inlet at one end through which organic vapor/particles are introduced, an outlet at the other end through which gases exit, at least one annular denuder interposed there between which is coated on the inside surface of the annulus with a specially prepared resin absorbent, which selectively absorbs organic vapors contained in the gases introduced into the inlet, and a filter which traps and collects particles. The invention further concerns a semi-volatile organic reversible gas sorbent for use in an integrated diffusion vapor-particle sampler comprising macroreticular resin agglomerates of randomly packed microspheres with the continuous porous structure of particles ranging in size between 0. 05-10 m.

US Patent:

57633606, Jun 9, 1998

Filed:

Apr 28, 1995

Appl. No.:

8/431358

Inventors:

Lara Gundel - Berkeley CA
Joan M. Daisey - Walnut Creek CA
Robert K. Stevens - Cary NC

Assignee:

The Regents of the University of California - Oakland CA

International Classification:

B01J 2026
G01N 3096

US Classification:

502402

Abstract:

A quantitative organic vapor-particle sampler for sampling semi-volatile organic gases and particulate components. A semi-volatile organic reversible gas sorbent macroreticular resin agglomerates of randomly packed microspheres with the continuous porous structure of particles ranging in size between 0. 05-10. mu. m for use in an integrated diffusion vapor-particle sampler.

US Patent:

6226852, May 8, 2001

Filed:

Jun 2, 1998

Appl. No.:

9/088593

Inventors:

Lara Gundel - Berkeley CA
Joan M. Daisey - Walnut Creek CA
Robert K. Stevens - Raleigh NC

Assignee:

The Regents of the University of California - Oakland CA

International Classification:

B23P 1100

US Classification:

29458

Abstract:

A method for fabricating a quantitative organic vapor-particle sampler for efficient sampling, detection and quantitation of semi-volatile organic gases, vapors and particulate components. The sampler comprises a diffusion chamber and at least one annular denuder of which surface is coated with a macroreticular resin agglomerates which selectively absorbs organic gases, vapors or particulate matter present in tested samples.