Content assessment of heavy metals active formsin Tyumen reserve’s soils

About the author:

Gulnara N. Shigabayeva, Cand. Sci. (Chem.), Associate Professor, Department of Organic and Ecological Chemistry, Institute of Chemistry, Tyumen State University

Abstract:

There are obtained experimental data on total content, acid-soluble content, and content of mobile forms of the heavy metals (copper, cadmium, manganese, cobalt, nickel, zinc, lead, iron, chromium) in Tyumen Reserve soils. The samples were taken at different horizons. Exceeding MAC of some metals is registered: copper — 2 MACs, lead — 2 MACs, nickel — 1.3 MACs, zinc — 1.2 MACs. Clarke concentrations are calculated for the studied elements. It is found, that the concentration of zinc, cadmium, nickel and iron does not occur in the soil because the elements disperse as compared with their average content in the crust. Clark concentrations of copper and chromium increased by almost 3 and 6 times respectively, lead concentrations—6 times. Exceeding MPCs especially in the upper horizon and increasing Clark concentration for these metals may indicate anthropogenic impact due to atmospheric transport.

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