LASER DETECTION AND MAPPING OF BIOLOGICAL SIMULANTS III. DICHOTOMOUS SAMPLER MEASUREMENTS OF AEROSOL CONCENTRATIONS AS RELATED TO LIDAR SIGNALS

PDF

Authors
  1. Ho, J.
  2. Evans, B.T.N.
  3. Roy, G.
Corporate Authors
Defence Research Establishment Suffield, Ralston ALTA (CAN);Defence Research Establishment Valcartier, Valcartier QUE (CAN)
Abstract
In a continuing series of investigations on biological aerosol detection by the Laser Cloud Mapper (LCM), reliable measurement of biological aerosol concentrations were found to be critical to LCM data interpretations. The sampling method must give reproducible results under difficult field conditions of rapidly changing environmental parameters. A series of trials were conducted to evaluate the Dichotomous Sampler (DS) as a device for the sampling of biological aerosols and to assess its potential for the estimation of biological aerosol concentrations during LCM trials. Samplied biological aerosols were enumerated as viable cells and provided reliable estimates of viable aerosol concentrations with respect to time. Interpretation of DS and LCM data demonstrated a relationship between cell concentrations and depolarization signal ratios which suggests that this technique has potential for remote biological aerosol detection at the 200-400 viable spores/liter level.
Report Number
DRES-532 —
Date of publication
15 Jun 1990
Number of Pages
40
DSTKIM No
90-03857
CANDIS No
66100
Format(s):
Hardcopy;Originator's fiche received by DSIS;Document Image stored on Optical Disk

Permanent link

Document 1 of 1

Date modified: