Airborne Particle Granulometry And
Micromorphology During Working And
Not Working Days In The Brussels Environment
Author(s)
P. Vanderstraeten, Y. Lénelle, A. Meurrens, D. Carati,
L. Brenig & Z. Y. Offer
Abstract
We report and analyze here data on airborne particles up to PM10, measured in
the Brussels region from October 2002 through to September 2003.
The purpose of this study was to measure the impact of urban activities on
airborne particles. Differences in the granulometry and micromorphology of
particles sampled on working days and weekends were studied. Two parameters
are computed for a large number of collected particles. The first parameter is the
isoperimetric quotient, IQ, defined as the area A of the planar projection of the
particle divided by the square of its perimeter (rescaled by 4π), i.e. IQ=4π A/p2.
This parameter is smaller or equal to one (for a circular planar projection) and
measures the particle surface irregularity or roughness.
The second parameter, β, corresponds to the ratio L1/L2 between the
projected major and minor axis of the particle. It is larger or equal to one and
represents the particle elongation.
We observed significant tendencies in the particles distributions in terms of
IQ and β.
Keywords: airborne particle, granulometry, micromorphology, Brussels
environment.
Keywords
airborne particle, granulometry, micromorphology, Brussels
environment.
Related Book
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