Physico-Chemical Characterization of PM10 and PM2.5
in the Belgrade Urban AreaMirjana Tasić,a Branislava Đurić-Stanojević,b Slavica Rajšić,a
Zoran Mijić,a Velibor Novakovića
aInstitute of Physics, 11080 Belgrade, Pregrevica 118, Serbia
bFaculty of Natural Sciences, Physics Department,18000 Niš, Višegradska 33,
Serbia
Absrtract
An extensive study on urban aerosols
with the aim to determine the sources and provide a physico-chemical description
of PM10 and PM2.5, present in the urban air of Belgrade, was performed. Daily
aerosol samples were collected in four seasonal episodes at three representative
places in the urban area of Belgrade in the period of 2002-2004. Suspended
particles were sampled on pure Teflon filters by using a Mini-Vol air sampler (Airmetrics
Co., Inc.; 5 L min-1 flow rate) and were analyzed by a JEOL JSM-5300 SEM via an
energy dispersive X-ray microanalysis system (EDX). The airborne particulate
matter was characterized from a physico-chemical point of view to supply
information on the particle composition and the compounds carried on their
surfaces. The combined use of microanalysis and statistical methods enabled
identification of several groups of particles such as: soot, sulfates, Si-rich,
metal-rich and biological particles.
Key words: particulate matter, urban air, characterization, SEM/EDX