Organochlorine compounds in bottom sediments,benthos, and fish in the volga pool of the Rybinsk Reservoir |
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Authors: | A V German V V Zakonnov A A Mamontov |
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Institution: | 1.Institute of Inland Water Biology,Russian Academy of Sciences,Borok, Nekouzskii raion, Yaroslavl oblast,Russia;2.Institute of Geochemistry, Siberian Branch,Russian Academy of Sciences,Irkutsk,Russia |
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Abstract: | The concentrations of three groups of organochlorine compounds (HCCH, DDT, and PCB) in bottom sediments, zebra mussel, and
two fish species—zope and roach—in the Volga Pool of the Rybinsk Reservoir. The concentrations of the examined toxicants can
be ranked in the ascending order as follows: HCCH<DDT<PCB. The total concentration of organochlorine compounds (OCC) and their
metabolites are very low, thus allowing the Volga Pool to be regarded as a background region for the Upper and Middle Volga
Basin. A congener-specific determination of PCB was carried out, and priority congeners were identified for monitoring the
ecosystem pollution by dioxin-like compounds. |
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