Abstract
Our work was aimed on the study of mobility of steel trace elements (STEs), using single-step extraction procedure (Na2EDTA) and ecotoxicity in suburban soils from the Košice, Slovakia. The total element contents were determined by X-ray fluorescence (XRF) analysis, Zn, Pb, Cd, Ni, and As in extracts and elements contents in earthworms tissues by the atomic absorption spectrometry (AAS) after 7 days bioassays (chronic tests of mortality). An ecotoxicological study was performed with earthworms (Dendrobaena veneta) for the screening evaluation of element mobility of urban grass and agricultural soils samples. Elements concentrations (Zn, Pb, Cd, Ni and As) in the suburban soils of Košice, indicating the significant contamination with Cd, and As were measured at sites located south of the ironworks. From the results of Pearson correlation analysis of yields, it can be seen that Pb - Zn, Cd, As; Cd - Zn, As; and As - Zn have obvious correlation, and the correlation between chemical parameters and nickel is not relevant.
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