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

Abstract

An improved method and system of identifying individual aerosol particles in real time. Sample aerosol particles are collimated, tracked, and screened to determine which ones qualify for mass spectrometric analysis based on predetermined qualification or selection criteria. Screening techniques include one or more of determining particle size, shape, symmetry, and fluorescence. Only qualifying particles passing all screening criteria are subject to desorption/ionization and single particle mass spectrometry to produce corresponding test spectra, which is used to determine the identities of each of the qualifying aerosol particles by comparing the test spectra against predetermined spectra for known particle types. In this manner, activation cycling of a particle ablation laser of a single particle mass spectrometer is reduced.

Inventors:
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [6];  [6]
+ Show Inventor Affiliations
  1. San Francisco, CA
  2. Patterson, CA
  3. Oakland, CA
  4. Kensington, CA
  5. Alamo, CA
  6. Livermore, CA
  7. Berkeley, CA
Issue Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
913342
Patent Number(s):
7260483
Application Number:
10/916,737
Assignee:
The Regents of the University of California (Oakland, CA)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
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DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Gard, Eric E, Coffee, Keith R, Frank, Matthias, Tobias, Herbert J, Fergenson, David P, Madden, Norm, Riot, Vincent J, Steele, Paul T, and Woods, Bruce W. Real-time detection method and system for identifying individual aerosol particles. United States: N. p., 2007. Web.
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Gard, Eric E, Coffee, Keith R, Frank, Matthias, Tobias, Herbert J, Fergenson, David P, Madden, Norm, Riot, Vincent J, Steele, Paul T, & Woods, Bruce W. Real-time detection method and system for identifying individual aerosol particles. United States.
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Gard, Eric E, Coffee, Keith R, Frank, Matthias, Tobias, Herbert J, Fergenson, David P, Madden, Norm, Riot, Vincent J, Steele, Paul T, and Woods, Bruce W. Tue . "Real-time detection method and system for identifying individual aerosol particles". United States. https://www.osti.gov/servlets/purl/913342.
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@article{osti_913342,
title = {Real-time detection method and system for identifying individual aerosol particles},
author = {Gard, Eric E and Coffee, Keith R and Frank, Matthias and Tobias, Herbert J and Fergenson, David P and Madden, Norm and Riot, Vincent J and Steele, Paul T and Woods, Bruce W},
abstractNote = {An improved method and system of identifying individual aerosol particles in real time. Sample aerosol particles are collimated, tracked, and screened to determine which ones qualify for mass spectrometric analysis based on predetermined qualification or selection criteria. Screening techniques include one or more of determining particle size, shape, symmetry, and fluorescence. Only qualifying particles passing all screening criteria are subject to desorption/ionization and single particle mass spectrometry to produce corresponding test spectra, which is used to determine the identities of each of the qualifying aerosol particles by comparing the test spectra against predetermined spectra for known particle types. In this manner, activation cycling of a particle ablation laser of a single particle mass spectrometer is reduced.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2007},
month = {8}
}
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Works referenced in this record:

Real-Time Analysis of Individual Atmospheric Aerosol Particles:  Design and Performance of a Portable ATOFMS
journal, October 1997

Online Analysis of Atmospheric Particles with a Transportable Laser Mass Spectrometer
journal, July 2000

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