The purpose of this study has been to determine the impact of selected gasoline stations on the content of trace elements in soil and roadside vegetation in areas adjacent to these facilities. Four gasoline stations chosen for analysis were located in Olsztyn, along streets exposed to urban and transportation pressure. The material for analyses was collected from a strip of lawn between each station and the street, and from a land parcel behind the station. Soil and plant samples (roadside common grasses) were submitted to the determination of the content of trace elements, and some soil properties. The research material varied in the content of determined trace elements. Significant differences were detected in soil between the analysed sites, regarding the content of Ni, Zn, Pb and Fe, namely a much higher concentration of Fe was detected at station I, while Zn and Pb were much more abundant at station II, and the highest content of Ni was at station IV. In plants, significant differences occurred with regard to their content of Co, Cr, Cu, Zn, Pb and Fe, such as the significantly highest Cr content at station I, Zn, Pb and Fe at station II, Cu at I, II and III, while Co reached the highest content in plants at stations III and IV. The research results did not demonstrate any cases of concentrations of trace elements in soils exceeding the threshold levels binding in the Polish law, although the EF value achieved indicated considerable anthropogenic enrichment of these soils in Pb and moderate enrichment in Cd, Cu and Zn.

25.2.2020