Abstract
Abstract Effects of road traffic on the ambient concentrations of three PM fractions and their main components in a large Upper Silesian city. The study concerns the assessment of the traffic influence on the concentrations of three particulate matter (PM) fractions and their basic components. The PM samples were collected simultaneously at two receptors in Katowice. The measurement sites represented the so-called urban background and traffic points. The contents of the organic and elementary carbon as well as water- -soluble ions were determined in the samples. It has been observed that the traffic (car engines) pollution emissions enrich the submicron and fine PM particles with the elementary carbon at a typical urban background in southern Poland. On the other hand, the influence of the re-suspension of the road and soil dust, caused by traffic, on the concentrations and chemical composition is observed for the coarse PM fraction.
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