DETECTION OF BW AGENTS: DUGWAY TRINATIONAL BW FIELD TRIAL 20-30 OCTOBER 1993, DUGWAY, UTAH, MOBILE AEROSOL SAMPLING UNIT DATA ANALYSIS

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Authors
  1. Ho, J.
  2. Spence, M.
  3. Fisher, G.R.
Corporate Authors
Defence Research Establishment Suffield, Ralston ALTA (CAN)
Abstract
An aerosol of BW simulant (BG spores) was generated by Micronair disseminators as a point source of 800 m from sampling systems. Propylene gas was also disseminated concurrently as a tracer. Collection and measurement of aerosol were perform by the Mobile Aerosol Sampling Unit (MASU) consisting of an Aerodynamic Particle Sizer (APS) particle sizer and a dichotomous sampler (DS). Environmental data (wind speed and direction among others) were also logged to assist analysis of cloud dynamics. Information gathered by the APS served to reveal the presence of unusual aerosol. By careful inspection of the data, it was anticipated that alarming algorithms could be developed. Samples collected by the DS provided important microbiological information like cell viability, a definitive indicator for the presence of biological aerosol. Data from day 271, trial 3, were chosen to illustrate the capability of the MASU in defining aerosol characteristics. In this trial, the primary cloud passage was followed immediately by a second, both revealed by analysis of the data generated by the sampling system. This phenomenon was clearly shown by detection of two propylene concentration peaks within the 30 min trial period. Total particle count data from the APS also revealed two similar peaks at the same time period. Aerosol mass information was obtained by transforming particle size and number data. TRUNCATED.
Keywords
Bacillus globigii;Mobile Aerosol Sampling Unit (MASU);BG spores;Aerosol detection
Report Number
DRES-619 —
Date of publication
01 Jan 1995
Number of Pages
33
DSTKIM No
95-03745
CANDIS No
150526
Format(s):
Document Image stored on Optical Disk;Hardcopy

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