Title: Apparatus for rapid measurement of aerosol bulk chemical composition

Abstract

An apparatus for continuous on-line measurement of chemical composition of aerosol particles with a fast time resolution is provided. The apparatus includes an enhanced particle size magnifier for producing activated aerosol particles and an enhanced collection device which collects the activated aerosol particles into a liquid stream for quantitative analysis by analytical means. Methods for on-line measurement of chemical composition of aerosol particles are also provided, the method including 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; and 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.; Weber, Rodney J.; Orsini, Douglas

Issue Date:

Tue Apr 18 00:00:00 EDT 2006

Research Org.:

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

Sponsoring Org.:

USDOE

OSTI Identifier:

1175709

Patent Number(s):

7029921

Application Number:

10/279,510

Assignee:

Brookhaven Science Associates, LLC (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

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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
Y10T436/25625 - Dilution
Y10T436/25875 - Gaseous sample or with change of physical state

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DOE Contract Number:  

AC02-98CH10886

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

47 OTHER INSTRUMENTATION