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Proceedings Paper

Recent testing and performance improvements of a fluorescence-based biological aerosol sensor
Author(s): Brian K. Dable; Geoffrey A. Wilson; James Brady; Mike M. Carrabba
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Paper Abstract

In this paper we describe BioLert II, an ultraviolet laser induced fluorescence (LIF) biological agent monitor for detecting low concentrations of pathogens amid the ambient aerosol. BioLert II measures the fluorescence intensity and size of individual particles, and computes the Degree of Threat (DoT), an indicator of the likelihood that a particular threat material has appeared amid the recently sampled aerosol background. Performance is quantified using Receiver Operating Characteristic (ROC) curves, which plot the relationship among threat concentration, probability of detection, and false alert rate. We present BioLert II ROC curves for the detection of several simulated biological agents in an environment of interest.

Paper Details

Date Published: 27 April 2007
PDF: 6 pages
Proc. SPIE 6554, Chemical and Biological Sensing VIII, 655410 (27 April 2007); doi: 10.1117/12.724217
Show Author Affiliations
Brian K. Dable, Hach Homeland Security Technologies (United States)
Geoffrey A. Wilson, Hach Homeland Security Technologies (United States)
James Brady, Hach Homeland Security Technologies (United States)
Mike M. Carrabba, Hach Homeland Security Technologies (United States)

Published in SPIE Proceedings Vol. 6554:
Chemical and Biological Sensing VIII
Augustus W. Fountain III, Editor(s)

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