Plant Soil Environ., 2002, 48(10):441-447 | DOI: 10.17221/4393-PSE

Geochemical and anthropogenic soil loads by potentially risky elements

R. Vácha, J. Němeček, E. Podlešáková
1 Research Institute for Soil and Water Conservation, Prague, Czech Republic
2 Czech University of Agriculture in Prague, Czech Republic

The differentiation between anthropogenic and geogenic loads of the soils by potentially risky elements was observed. The collection of soil horizon samples from 21 localities with different anthropogenic loads (imission fall-outs, floods, historical mining) and geogenic loads (lithogenic, chalcogenic) was composed. The soil characteristics (pH, Cox), total content of 13 potentially risky elements, content of potentially risky elements in the extract of 2M HNO3, 1M NH4NO3 (mobile forms) and 0.025M EDTA (potentially mobilizable forms) were detected. The solubility as the ratio of total content and the content of risky elements in the other extracts was calculated. The differences between the solubility for each risky element and for each type of the load were determined. It was concluded that the highest solubility was determined in the fluvisols contaminated by the floods and in the soils contaminated by imission fall-outs. Significantly lower solubility of potentially risky elements was determined in the soils with geogenic loads. The efficiency of the used extracts for the differentiation of the soil load was assessed (2M HNO3, 0.025M EDTA). The types of geogenic loads were characterised in the extent of used soil collection. Geochemically anomalous parent materials and soil types developed on these parent materials were described.

Keywords: potentially risky elements; geogenic and anthropogenic soil loads; solubility of risky elements

Published: October 31, 2002  Show citation

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Vácha R, Němeček J, Podlešáková E. Geochemical and anthropogenic soil loads by potentially risky elements. Plant Soil Environ. 2002;48(10):441-447. doi: 10.17221/4393-PSE.
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