Organochlorine contaminants in a local marine food chain from Jarfjord, Northern Norway

摘要

Polychlorinated biphenyls (PCBs, 17 congeners). ΣDDT (p,p'DDT, p,p'-DDD, p,p'-DDE and o,p'-DDD), chlordanes (oxychlordane and trans-nonachlor), hexachlorocyclohexanes (HCHs, α-, β- and γ -isomers) and hexachlorobenzene (HCB) have been determined in a local marine food chain including the lesser sandeel (Ammodytes marinus), cod (Gadus morhua), harbour seal (Phoca vilulina) and grey seal (Halichoerus grypus), caught in Jarfjord, Northern Norway. The concentrations of the pollutants generally increased with trophic level. The highest biomagnification factor (36.9) was found for ΣDDT from sandeel to harbour seal. The compositional patterns of accumulated organochlorines also differed between the species.