RELATIONSHIP BETWEEN POLYCYCLIC AROMATIC HYDROCARBON (PAH) CONCENTRATIONS IN BOTTOM SEDIMENTS AND LIVER-TISSUE OF BREAM (ABRAMIS-BRAMA) IN RYBINSK RESERVOIR, RUSSIA

Polycyclic aromatic hydrocarbons (PAH) were measured in bottom sedimen ts from Rybinsk Reservoir, Russia, and livers of bream (Abramis brama) . Sediments were heavily contaminated by a variety of PAH compounds in Sheksninsky Bay adjacent to the industrial centre at Tcherepovets. Di fferences in spatial distribution of high and low molecular weight PAH s suggest separate routes into the reservoir. PAHs recorded in low con centrations at two reference sites may be derived from atmospheric inp uts and contamination From shipping. Elevated concentrations of low mo lecular weight PAHs were found in livers of bream from Sheksninsky Bay , particularly at a site close to the waste water outlet from a metall urgical plant.