Investigation of Exposure Level of PFOS and PFOA in the Body of Marine Animals in Dalian Coastal Waters

Concentrations of perfluorooctane sulfonate(PFOS)and perfluorooctanoic acid(PFOA)in marine animals collected from Dalian coastal waters in spring 2009 were determined by LC/MS method.For the muscle of fish,crabs,cuttlefish and sea urchins,average concentrations(ACs)of PFOS were 0.40 ng/g,0.07 ng/g,0.09 ng/g and 0.12 ng/g(wet weight)respectively,while ACs of PFOA were 0.06 ng/g,0.01 ng/g,0.06 ng/g and 0.10 ng/g(wet weight)respectively.ACs of PFOS and PFOA in fish liver were 0.90 ng/g and 0.24 ng/g(wet weight)respectively.Results showed that there is a widespread existence of PFOS and PFOA in the marine animals in Dalian coastal waters,with ACs of PFOS and PFOA in fish liver higher than that in fish muscle.It was found that the exposure level observed in the present study is low in comparison with those in the aquatic products in USA and Japan.