Chemical elements in the soils and macromycetes of the urban area of Petrozavodsk

The contents and behavior of 50 chemical elements in the soils from the zone of residual (accumulated) industrial pollution in the central part of Petrozavodsk, as well as in the fungal fruits of Verpa bohemica (Krombh). Schroet. and Leccinum scabrum (Bull.: Fr.) S. F. Gray from the same territory were studied. The hazard of contaminated soil was estimated by the excess of the maximum permissible concentrations (MPCs) and tentatively permissible concentrations (TPCs) of chemical elements, as well as by total pollution index (taking into account the toxicity of the elements), and macromycetes as food products – by the contents of Pb, Cd, Zn and Cu relative to established standards. For the caps and stems of L. scabrum the rows of chemical elements content relative to background conditionally defined in a control area significantly remote from any industrial centers, large roads and railway lines (Pryazhinsky district of the Republic of Karelia) were built up. It was shown that the content of toxicants behind some exception is higher in spring mushrooms than in autumn ones. In V. bohemica the strong accumulation of P was established relative to the soil substrate and that of P and Rb – in L. scabrum. The average degree of accumulation was characteristic for Zn, Rb, Tl, Cu, Cd, Ag, Sc, Ni, Cs (V. bohemica), Cd, Ag, Tl, Zn, Cs, Sc, Ni, Cu (L. scabrum).