Occurrence of anthropogenic and naturally-produced organohalogenated compounds in tissues of Black Sea harbour porpoises.
Harbour porpoises are one of the three cetacean species inhabiting the Black Sea. This is the first study to report on polybrominated diphenyl ethers (PBDEs) and naturally-produced compounds, methoxylated PBDEs (MeO-PBDEs) and polybrominated hexahydroxanthene derivatives (PBHDs), in tissues (kidney, brain, blubber, liver, muscle) of male harbour porpoises (11 adults, 9 juveniles) from the Black Sea. Lipid-normalized concentrations decreased from muscle>blubber>liver>kidney>brain for the sum of polychlorinated biphenyls (PCBs) and for the sum of PBDEs. Among the naturally-produced compounds, levels of PBHDs were higher than of MeO-PBDEs, with tri-BHD and 6-MeO-BDE 47 being the dominant compounds for both groups, respectively. Concentrations of naturally-produced compounds decreased from blubber to brain, similarly to the sum of DDT and metabolites (DDXs). Concentrations of DDXs were highest, followed by PCBs, HCB, PBHDs, PBDEs and MeO-PBDEs. Levels of PCBs and PBDEs in blubber were lower than concentrations reported for harbour porpoises from the North Sea, while concentrations of DDXs were higher.
Weijs
Liesbeth
L
Toxicological Centre, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium. liesbeth.weijs@ua.ac.be
Das
Krishna
K
Neels
Hugo
H
Blust
Ronny
R
Covaci
Adrian
A
D000818:Animals; D004784:Environmental Monitoring; D005061:Europe, Eastern; D005411:Flame Retardants / Q000032:analysis* / Q000493:pharmacokinetics; D005843:Geography; D055768:Halogenated Diphenyl Ethers / Q000032:analysis / Q000493:pharmacokinetics; D006846:Hydrocarbons, Halogenated / Q000032:analysis* / Q000493:pharmacokinetics; D008055:Lipids / Q000032:analysis; D008297:Male; D009792:Oceans and Seas; D050741:Phocoena / Q000378:metabolism*; D014018:Tissue Distribution; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000493:pharmacokinetics; D014966:Xanthenes / Q000032:analysis / Q000493:pharmacokinetics
C542113:2,5,7-tribromo-4a-bromomethyl-1,1-dimethyl-2,3,4,4a,9,9a-hexahydro-1H-xanthene; C542114:2,7-dibromo-4a-bromomethyl-1,1-dimethyl-2,3,4,4a,9,9a-hexahydro-1H-xanthene; D005411:Flame Retardants; D055768:Halogenated Diphenyl Ethers; D006846:Hydrocarbons, Halogenated; D008055:Lipids; D014874:Water Pollutants, Chemical; D014966:Xanthenes