Paul Joseph Solomon

US Patent:

6829919, Dec 14, 2004

Filed:

Nov 13, 2001

Appl. No.:

09/992544

Inventors:

Constantinos Sioutas - Los Angeles CA
Paul A. Solomon - Henderson NV

Assignee:

University of Southern California - Los Angeles CA

International Classification:

G01N 1500

US Classification:

73 2804, 73 2805

Abstract:

A system for monitoring an aerosol including a plurality of particles is provided. Each of the particles has a size. The system includes an impactor assembly to receive the aerosol at a first flow rate and remove an exhaust portion of the particles that are less than a minimum particle size or greater than a maximum particle size. A remaining portion of the particles is emitted at a second flow rate lower than the first flow rate. A first sensor measures a characteristic of the remaining portion of the particles.

US Patent:

7325465, Feb 5, 2008

Filed:

Feb 3, 2005

Appl. No.:

11/049303

Inventors:

Paul A. Solomon - Henderson NV, US
Constantinos Sioutas - Pasadena CA, US

Assignee:

U.S. Environmental Protection Agency - Washington DC

International Classification:

G01N 1/22

US Classification:

7386322

Abstract:

An apparatus for sampling ambient air to obtain coarse and fine fractions of particulate matter includes a single acceleration tube and a collection tube coaxially arranged along a central axis with a gap between facing distal ends thereof within a range of d/D of 1 to 2, wherein d is the distance or gap between the distal ends and D is the inside diameter of the outlet at the distal end of the acceleration tube. A housing surrounding the acceleration and concentration tubes is provided with a side-wall nozzle connected to a suction device for drawing a major portion of the sampled ambient air therethrough and for separation of particulate matter, as a fine fraction, from that major portion. A second suction device draws a minor portion of the sampled ambient air, containing the coarse fraction of the particulate matter, in a straight path approximating the central axis, through the acceleration tube and through the collection tube for passage through a filter for separation of the coarse fraction of particulate matter. The ratio of the flow rates of the major and minor portions of the sampled ambient air is adjusted to provide a cutpoint within the range of 2-3 microns.

US Patent:

20100089183, Apr 15, 2010

Filed:

Oct 7, 2009

Appl. No.:

12/575128

Inventors:

Paul A. Solomon - Henderson NV, US

Assignee:

U.S. Environmental Protection Agency - Washington DC

International Classification:

G01N 1/22

US Classification:

7386322

Abstract:

A multi-filter chemical speciation sampler and a virtual impaction particle separation inlet therefore are provided. The inlet includes a housing having a bottom, a collection tube that extends through the bottom, and collection apertures formed in the bottom, arranged around the collection tube; a first plate disposed on top of the housing, having acceleration nozzles disposed at the perimeter thereof; a second plate disposed in the housing below the first plate, having a central aperture and separation apertures disposed around the central aperture. The sampler includes: an inlet; a virtual impaction separator to further fractionate the PM into a course fraction and a fine fraction; a first separation assembly to divide the course fraction into coarse aliquots, comprising first filters to collect the coarse aliquots; a second separation assembly to divide the fine fraction into fine aliquots, comprising second filters to collect the fine aliquots.

US Patent:

20140020349, Jan 23, 2014

Filed:

Sep 23, 2013

Appl. No.:

14/034165

Inventors:

Paul A. Solomon - Henderson NV, US

Assignee:

U.S. ENVIRONMENTAL PROTECTION AGENCY - Washington DC

International Classification:

B01D 45/08

US Classification:

55465

Abstract:

A multi-filter chemical speciation sampler and a virtual impaction particle separation inlet therefore are provided. The inlet includes a housing having a bottom, a collection tube that extends through the bottom, and collection apertures formed in the bottom, arranged around the collection tube; a first plate disposed on top of the housing, having acceleration nozzles disposed at the perimeter thereof; a second plate disposed in the housing below the first plate, having a central aperture and separation apertures disposed around the central aperture. The sampler includes: an inlet; a virtual impaction separator to further fractionate the PM into a course fraction and a fine fraction; a first separation assembly to divide the course fraction into coarse aliquots, comprising first filters to collect the coarse aliquots; a second separation assembly to divide the fine fraction into fine aliquots, comprising second filters to collect the fine aliquots.

US Patent:

20140338297, Nov 20, 2014

Filed:

May 19, 2014

Appl. No.:

14/281626

Inventors:

- Washington DC, US
Paul A. SOLOMON - Henderson NV, US

Assignee:

U.S. Environmental Protection Agency - Washington DC

International Classification:

B01D 39/20

US Classification:

55523

Abstract:

An artifact free inert filter medium for collection of organic particles is a fibrous material is developed that can be formed into filters used in ambient and indoor air sampling equipment for subsequent laboratory chemical analysis by one of several thermal optical or thermal analysis methods for the determination of organic carbon (OC), elemental carbon (EC), pyrolysis carbon (PC), and total carbon (TC, sum of OC+EC), carbon fractions determined by thermal or thermal-optical analysis methods (OC1, OC2, OC3, OC4, PC, EC1, EC2, EC3) as well can be analyzed in the laboratory for individual organic species by a range of thermal analysis and or extraction/analysis methods.

Address:

7311 Hazel Pln Ave, Las Vegas, NV 89131

VIN:

2C3KA63H47H852307

Make:

CHRYSLER

Model:

300

Year:

2007