Title: Apparatus for rapid measurement of aerosol bulk chemical composition

Abstract

An apparatus and method for continuous on-line measurement of chemical composition of aerosol particles with a fast time resolution are provided. The apparatus includes a modified particle size magnifier for producing activated aerosol particles and a collection device which collects the activated aerosol particles into a liquid stream for quantitative analysis by analytical methods. The method provided for on-line measurement of chemical composition of aerosol particles includes exposing aerosol carrying sample air to hot saturated steam thereby forming activated aerosol particles; collecting the activated aerosol particles by a collection device for delivery as a jet stream onto an impaction surface; flushing off the activated aerosol particles from the impaction surface into a liquid stream for delivery of the collected liquid stream to an analytical instrument for quantitative measurement.

Inventors:

Lee, Yin-Nan E ^[1]; Weber, Rodney J ^[2]

---

+ Show Inventor Affiliations

1. East Setauket, NY
2. Atlanta, GA

Issue Date:

2003-01-01

Research Org.:

Brookhaven National Laboratory (BNL), Upton, NY (United States)

OSTI Identifier:

874989

Patent Number(s):

6506345

Assignee:

Brookhaven Science Associates (Upton, NY)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

Show more

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B01D15/36 - involving ionic interaction

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

G01N15/0255 - {with mechanical, e.g. inertial, classification, and investigation of sorted collections
G01N15/065 - {using condensation nuclei counters}
G01N2015/0261 - {using impactors}
G01N2015/0681 - {Purposely modifying particles, e.g. humidifying for growing}
G01N30/02 - Column chromatography

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

Y10T436/235 - In an aqueous solution [e.g., TOC, etc.]
Y10T436/25 - including sample preparation

Show less

DOE Contract Number:  

AC02-98CH10886

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

apparatus; rapid; measurement; aerosol; bulk; chemical; composition; method; continuous; on-line; particles; fast; time; resolution; provided; modified; particle; size; magnifier; producing; activated; collection; device; collects; liquid; stream; quantitative; analysis; analytical; methods; exposing; carrying; sample; air; hot; saturated; steam; forming; collecting; delivery; jet; impaction; surface; flushing; collected; instrument; particle size; chemical composition; aerosol particle; /422/73/436/