Real-Time Detection Method And System For Identifying Individual Aerosol Particles

Patent · Tue Oct 25 00:00:00 EDT 2005

OSTI ID:879854

Gard, Eric Evan ^[1]; Fergenson, David Philip ^[2]

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1. San Francisco, CA
2. Livermore, CA

A method and system of identifying individual aerosol particles in real time. Sample aerosol particles are compared against and identified with substantially matching known particle types by producing positive and negative test spectra of an individual aerosol particle using a bipolar single particle mass spectrometer. Each test spectrum is compared to spectra of the same respective polarity in a database of predetermined positive and negative spectra for known particle types and a set of substantially matching spectra is obtained. Finally the identity of the individual aerosol particle is determined from the set of substantially matching spectra by determining a best matching one of the known particle types having both a substantially matching positive spectrum and a substantially matching negative spectrum associated with the best matching known particle type.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: The Regents of the University of California (Oakland, CA)
• Patent Number(s): US 6959248
• Application Number: 10/280608
• OSTI ID: 879854
• Country of Publication: United States
• Language: English