Bioaccumulation of per- and polyfluorinated alkyl substances (PFAS) in selected species from the Barents Sea food web.
The present study reports concentrations and biomagnification potential of per- and polyfluorinated alkyl substances (PFAS) in species from the Barents Sea food web. The examined species included sea ice amphipod (Gammarus wilkitzkii), polar cod (Boreogadus saida), black guillemot (Cepphus grylle) and glaucous gull (Larus hyperboreus). These were analyzed for PFAS, polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethanes (DDTs) and polybrominated diphenyl ethers (PBDEs). Perfluorooctane sulfonate (PFOS) was the predominant of the detected PFAS. Trophic levels and food web transfer of PFAS were determined using stable nitrogen isotopes (delta(15)N). No correlation was found between PFOS concentrations and trophic level within species. However, a non-linear relationship was established when the entire food web was analyzed. Biomagnification factors displayed values >1 for perfluorohexane sulfonate (PFHxS), perfluorononanoic acid (PFNA), PFOS and SigmaPFAS(7). Multivariate analyses showed that the degree of trophic transfer of PFAS is similar to that of PCB, DDT and PBDE, despite their accumulation through different pathways.
Haukås
Marianne
M
Norwegian Polar Institute, Tromsø, Norway. m.haukaas@nilu.no
Berger
Urs
U
Hop
Haakon
H
Gulliksen
Bjørn
B
Gabrielsen
Geir W
GW
D033304:Amphipoda / Q000378:metabolism; D000818:Animals; D001110:Arctic Regions; D001717:Birds / Q000378:metabolism; D003634:DDT / Q000032:analysis / Q000378:metabolism; D017753:Ecosystem; D004785:Environmental Pollutants / Q000378:metabolism*; D005399:Fishes / Q000378:metabolism; D020387:Food Chain; D055768:Halogenated Diphenyl Ethers; D006845:Hydrocarbons, Fluorinated / Q000378:metabolism*; D009792:Oceans and Seas; D010647:Phenyl Ethers / Q000032:analysis / Q000378:metabolism; D011075:Polybrominated Biphenyls / Q000032:analysis / Q000378:metabolism; D011078:Polychlorinated Biphenyls / Q000032:analysis / Q000378:metabolism
D004785:Environmental Pollutants; D055768:Halogenated Diphenyl Ethers; D006845:Hydrocarbons, Fluorinated; D010647:Phenyl Ethers; D011075:Polybrominated Biphenyls; C086401:pentabromodiphenyl ether; D003634:DDT; D011078:Polychlorinated Biphenyls