Particle Resuspension Characterisation by Optical Methods
by
Alecsandra Rambert
LIMSI-CNRS, B.P. 133 ,91403 Orsay FRANCE
Coauthors: Laurent Huber (Laboratoire de Bioclimatologie , INRA, 78850 Plaisir-Grignon), Pierre Gougat (Laboratoire de Bioclimatologie , INRA, 78850 Plaisir-Grignon)

The resuspension rate, defined as the ratio between the number of resuspended particles by unit surface and unit time, is the main parameter that characterises the resuspension process. Ziskind and al1 made an exhaustive review of resuspension models and experimental techniques which were developed for small particles (diameter greater than 5 µm and smaller than 50 µm). The experimental techniques developed to characterise resuspension are difficult to employ (particle counting under microscope) and they are not able to describe the characteristic time scale of the resuspension phenomena (<1s). In this study we propose a new technique based on image processing to quantify the particle resuspension process.

Date received: April 6, 1999

Copyright © 1999 by the author(s). The author(s) of this document and the organizers of the conference have granted their consent to include this abstract in Atlas Conferences Inc. Document # cacp-61.