Abstract
The emission of platinum(Pt) from automobile catalytic converters has caused rapid increase in Pt levels of the urban environment. The purpose of this study is to examine the Pt levels in road dusts, roadside soils and tree barks in and around Seoul metropolitan city. All samples were collected from the sites of various traffic volumes, and analysed for Pt and heavy metals by ICP-MS and ICP-OES, respectively. Platinum levels were in the range of 0.4 444.4 ng/g in road dusts and roadside soils, and 0.9 4.5 ng/g in tree barks. These results are comparable with other previous studies and show high elevation of Pt levels in urban environment. Platinum levels in the roadside environment are influenced by traffic volume, driving style and topography. There was not significant correlation between Pt and other heavy metals in road dusts.
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