Real-time detection method and system for identifying individual aerosol particles

  • US 20040024539A1
  • Filed: 10/24/2002
  • Published: 02/05/2004
  • Est. Priority Date: 10/25/2001
  • Status: Active Grant
First Claim
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1. A method of identifying individual aerosol particles in real time comprising:

  • receiving sample aerosol particles;

    producing positive and negative test spectra of an individual aerosol particle using a bipolar single particle mass spectrometer;

    comparing each test spectrum to spectra of the same respective polarity in a database of predetermined positive and negative spectra for known particle types to obtain a set of substantially matching spectra; and

    determining the identity of the individual aerosol particle 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 therewith from the set.

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