Polichlorowane naftaleny [PCNs] w omulku Mytilus trosulus i storni Platichthys flesus z Zatoki Gdanskiej

Przedstawiono wyniki kongenero-specyficznej analizy pozostałości polichlorowanych naftalenów w tkanach miękkich omułków oraz całych storniach z Zatoki Gdańskiej. Wyznaczono współczynniki bioakumulacji PCNs w łańcuchu troficznym obejmującym stornię i omułka.

The concentrations, fingerprints and patterns of tetra-through hepta-CNs have been determined in mussel and flounder as well as their bioaccumulation factors (BAF) in fish collected from the Gulf of Gdańsk, Baltic Sea. Polychlorinated naphthalenes were quantified using capillary gas chromatography and high-resolution mass spectrometry (HRGC/MS) after nondestructive extraction and cleanup step with further fractionation on an activated carbon column. Tetra-CNs were the dominant PCN homoloque group determined in mussel, followed by penta- hexa- and hepta-CNs. In flounder the dominant PCNs were, in the descending order, penta- hexa- tetra- and hepta-CNs. The concentration of the total PCNs was 110 ng/g lipid wt. in mussel collected from the Gdynia sampling site and 80 ng/g from the Orłowo site, while in flounder the total PCN concentration was 36 ng/g lipid wt. Most of hexa-CNs, the two hepta-CNs, and some penta- and tetra-CNs were bioaccumulated in mussel and flounder. For 1,2,3,5,6,7-H6CN (PCN No. 69) the BAF value was 16.