Scientific journal
Scientific Review. Biological science
ISSN 2500-3399
ПИ №ФС77-57454

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RADIAL DISTRIBUTION OF THE GROSS CONTENT AND LABILE FORMS OF HEAVY METALS IN SOILS ON INDUSTRIAL LANDS IN PETROZAVODSK

Novikov S.G. 1
1 Forest Research Institute of the Karelian Research Centre of the Russian Academy of Sciences
The present study has investigated the soils of industrial lands in Petrozavodsk. The types of urban soils were identified. The gross content and labile forms of heavy metals (Pb, Cr, Cu , Co , Ni, Mn, Zn) in samples from each soil horizon were analyzed. The radial distribution of pollutants in the pits was described in detail. It was determined that the total content of lead, copper and nickel in soil layers at different depths exceeded MAC (maximum allowable concentration) while the content of other elements remained within permissible limits. Among labile forms of heavy metals MAC was exceeded only by copper. It was found that the radial distribution of pollutants significantly depended on the composition and properties of anthropogenically transformed soil horizons, which can form geochemical barriers. It should be noted that this article presents only a part of large-scope environmental assessment studies of heavy metal contamination of soils in the city of Petrozavodsk.