抄録
Polychlorinated naphthalenes (PCN) in marine fishes caught by inshore fishery were determined by ECD-gas chromatography after clean-up procedures comprising the separation from PCB by polyamide thin-layer chromatography. Though most of fishes contained PCN at levels lower than 1 ppb, some of the fishes living near the mouth of a river contained a remarkable amount of the compound, showing several tens of ppb levels. The contamination of all the fishes tested indicated the wide-spread contamination of natural environment. From the concentration ratio of PCN to PCB in the fish and the previously reported human adipose tissue, it was assumed that fishes were the most important source of human contamination.
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