Abstract
The water ecosystem of the Vyshny Volochek Reservoir is characterized based on the study of the distribution of heavy metals speciations in the solid phase and pore waters of bottom sediments. Using the sequential extraction procedure, it is shown that Mn is mainly present in exchangeable and carbonate-bound forms; significant roles for Fe, Zn, Pb, and Co are played by forms that are bound to iron and manganese hydroxides and Cu and Ni are mainly bound to organic matter. Thermodynamic calculations have established the prevailing share of the following forms in pore waters: free ions for Zn, Ni, Co, and Cd, carbonate complexes for Pb, and fulvic complexes for Cu. It has been revealed that the speciation forms of heavy metals in bottom sediments depend on the lithological features and content of organic matter in sediments.
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Original Russian Text © O.A. Lipatnikova, 2018, published in Vestnik Moskovskogo Universiteta, Seriya 4: Geologiya, 2018, No. 3, pp. 46–54.
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Lipatnikova, O.A. The Heavy Metals Speciations in Bottom Sediments of Vyshny Volochek Reservoir. Moscow Univ. Geol. Bull. 73, 366–374 (2018). https://doi.org/10.3103/S0145875218040087
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DOI: https://doi.org/10.3103/S0145875218040087