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Apparatus for rapid measurement of aerosol bulk chemical composition

United States Patent

April 18, 2006
View the Complete Patent at the US Patent & Trademark Office
Brookhaven National Laboratory - Visit the Office of Technology Commercialization and Partnerships Website
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.
Lee; Yin-Nan E. (East Setauket, NY), Weber; Rodney J. (Atlanta, GA), Orsini; Douglas (Aubiere Cedex, FR)
Brookhaven Science Associates, LLC (Upton, NY)
10/ 279,510
October 24, 2002
This invention was made with Government support under contract number DE-AC02-98CH10886, awarded by the U.S. Department of Energy. The Government has certain rights in the invention.