Outdoor chamber measurements of biological aerosols with a passive FTIR spectrometer

Francis M. D'Amico; Darren K. Emge; Geoffrey J. Roelant

doi:10.1117/12.518558

27 February 2004 Outdoor chamber measurements of biological aerosols with a passive FTIR spectrometer

Francis M. D'Amico, Darren K. Emge, Geoffrey J. Roelant

Proceedings Volume 5268, Chemical and Biological Standoff Detection; (2004) https://doi.org/10.1117/12.518558
Event: Optical Technologies for Industrial, Environmental, and Biological Sensing, 2003, Providence, RI, United States

Abstract

Outdoor measurements of dry bacillus subtilis (BG) spores were conducted with a passive Fourier transform infrared (FTIR) spectrometer using two types of chambers. One was a large open-ended cell, and the other was a canyon of similar dimensions. The canyon exposes the aerosol plume to downwelling sky radiance, while the open-ended cell does not. The goal of the experiments was to develop a suitable test methodology for evaluation of passive standoff detectors for open-air aerosol measurements. Dry BG aerosol particles were dispersed with a blower through an opening in the side of the chamber to create a pseudo-stationary plume, wind conditions permitting. Numerous trials were performed with the FTIR spectrometer positioned to view mountain, sky and mixed mountain-sky backgrounds. This paper will discuss the results of the FTIR measurements for BG and Kaolin dust releases.

Citation Download Citation

Francis M. D'Amico, Darren K. Emge, and Geoffrey J. Roelant "Outdoor chamber measurements of biological aerosols with a passive FTIR spectrometer", Proc. SPIE 5268, Chemical and Biological Standoff Detection, (27 February 2004); https://doi.org/10.1117/12.518558

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