CHEMICAL CHARACTERIZATION OF PM_2.5 AEROSOLS IN ATHENS-GREECE

摘要

Atmospheric aerosols, PM_2.5, were simultaneously collected in the center of Athens and in a semi-urban area of the Athens basin, using the Harvard Impactor (HI) systems, from March 1995 to March 1996. 224 24-hr samples were collected. Chemical analysis of the filter samples was performed using ion chromatography (Cl, SO_4~2-, NO_3~-, Na~+, K~+, NH_4~+, Mg~2+, Ca~2+). In addition aerosol acidity was measured using a semi-micro electrode. No significant differences in chemical Composition of particles were observed between the two sampling sites.