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Proceedings Paper

High-sensitivity photoacoustic detection of chemical warfare agents
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Paper Abstract

We report sensitive and selective detection of Diisopropyl methylphosphonate (DIMP) - a decomposition product of Sarin and a common surrogate for the nerve gases - in presence of several gases expected to be interferences in an urban setting. By employing photoacosutic spectroscopy with broadly tunable CO2 laser as a radiation source we demonstrate detection sensitivity for DIMP in the presence of these interferences of better than 0.5 ppb in 60 second long measurement time, which satisfies most current homeland and military security requirements and validates the photoacoustic spectroscopy as a powerful technology for nerve gas sensing instrumentation.

Paper Details

Date Published: 29 December 2004
PDF: 8 pages
Proc. SPIE 5617, Optically Based Biological and Chemical Sensing for Defence, (29 December 2004); doi: 10.1117/12.579102
Show Author Affiliations
Michael B. Pushkarsky, Pranalytica, Inc. (United States)
Michael E. Webber, Pranalytica, Inc. (United States)
Tyson MacDonald, Pranalytica, Inc. (United States)
C. Kumar N. Patel, Pranalytica, Inc. (United States)
Univ. of California/Los Angeles (United States)

Published in SPIE Proceedings Vol. 5617:
Optically Based Biological and Chemical Sensing for Defence
John C. Carrano; Arturas Zukauskas, Editor(s)

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