Pozostalosci chlorowych pochodnych weglowodorow w organizmach trzech gatunkow ryb z Zalewu Szczecinskiego

Przedstawiono wyniki analiz pozostałości chlorowych pochodnych węglowodorów HCB, HCH, DDT z metabolitami oraz PCB w tkance mięśniowej i wątrobach trzech gatunków ryb odłowionych w Zalewie Szczecińskim.

The muscular tissue and the livers of three fresh-water fish species: roach (Rutilus rutilus), perch (Perca fluviatilis), and bream (Abramis abrama) collected from the Szczecin Bay were studied. One of the aim of the work was to determine the residues of y-HCH, DDT and its metabolites, HCB, and five main chlorinated biphenyl derivatives. The concentrations of the studied chemicals in the muscles were below 15 ng/g, while for the liver the corresponding figure was 60 ng/g. The results of statistical analysis show significantly higher concentrations of the chemicals in the muscles of roach. Levels of chlorinated hydrocarbon derivatives were approximately the same in the muscles of perch and bream. Amounts of the studied chemicals in the livers of the individual fish species were also found to be approximately the same. From our data, it is not possible to infer whether higher concentrations of the chemicals in the muscles of roach observed in our work constitute a characteristic feature of that fish species.