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On-line gas chromatographic analysis of airborne particles

United States Patent

January 3, 2012
View the Complete Patent at the US Patent & Trademark Office
A method and apparatus for the in-situ, chemical analysis of an aerosol. The method may include the steps of: collecting an aerosol; thermally desorbing the aerosol into a carrier gas to provide desorbed aerosol material; transporting the desorbed aerosol material onto the head of a gas chromatography column; analyzing the aerosol material using a gas chromatograph, and quantizing the aerosol material as it evolves from the gas chromatography column. The apparatus includes a collection and thermal desorption cell, a gas chromatograph including a gas chromatography column, heated transport lines coupling the cell and the column; and a quantization detector for aerosol material evolving from the gas chromatography column.
Hering; Susanne V. (Berkeley, CA), Goldstein; Allen H. (Orinda, CA)
Aerosol Dynamics, Inc. (Berkeley, CA), The Regents of the University of California (Oakland, CA)
11/ 008,851
December 10, 2004
This invention was made with government support under Grant No.: DE-FG02-03ER83825 from the US Department of Energy. The government has certain rights in the invention.