Measurement Of Vertical Number Concentration Profiles Of Airborne
Particles Near An Urban Roadway
Author(s)
A. Micallef & J.J. Colls
Abstract
Measurement of vertical number concentration
profiles of airborne particles near an urban
roadway
A. Micallef ' & J. J. colls2
1 Department of Physics, Faculty of Science, University of Malta, Malta.
2 ~ h e School of Life and Environmental Sciences, The University of
Nottingham, UK
Abstract
One major source of airborne particulate matter in urban areas is motor vehicles.
A novel sampling method, the Kinetic Sequential Sampling (KSS) system, has
been used to measure vertical number concentration profiles of various size
fractions of airborne particles, within an urban street canyon. In the preliminary
study, measurements were carried out over the first three metres from ground. It
was found that larger particles exhibit a slightly larger concentration gradient as
compared to the smaller particle sizes; and the concentration of the latter was
about two orders of magnitude higher than that for larger particle sizes. Both
findings may have implications on human health especially for groups breath
Keywords
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