Polychlorinated biphenyl residues in deep-sea fish from Mediterranean Sea.
Polychlorinated biphenyls including coplanar congeners were measured in the liver of different species of skates and ghostsharks. The mean concentrations of PCBs in skates (314 ng/g wet wt) were comparable with those in ghostsharks (285 ng/g wet wt). The specific analysis of PCB congeners in skates hepatic tissue revealed a profile dominated by hexa-, penta-, and heptachlorinated congeners followed by trichlorobiphenyls, tetra- and decachlorobiphenyls. A different profile dominated by hexa-, tri-, and pentachlorinated congeners, followed by heptachlorobiphenyl and decachlorobiphenyls was found in ghostsharks liver. The estimated 2,3,7,8-tetrachlorodibenzo-p-dioxin toxic equivalents (TEQs) of coplanar PCBs in skates and ghostsharks were 0.48 and 0.33 pg/g wet weight, respectively, with mono-ortho congeners PCB105, 118 and 156 contributing more than 90% to the TEQs.
Pharmacological-Biological Department-Chemistry and Biochemistry Section, Veterinary Medicine Faculty, University of Bari, Strada Prov le per Casamassima Km 3, 70010 Valenzano, Bari, Italy.
M M
MM
Storelli
A
A
Storelli
R
R
D'Addabbo
G
G
Barone
G O
GO
Marcotrigiano
D000818:Animals; D004784:Environmental Monitoring; D004785:Environmental Pollutants / Q000032:analysis / Q000493:pharmacokinetics*; D008522:Mediterranean Sea; D011078:Polychlorinated Biphenyls / Q000032:analysis / Q000493:pharmacokinetics*; D012754:Sharks; D012860:Skates, Fish; D014018:Tissue Distribution
D004785:Environmental Pollutants; D011078:Polychlorinated Biphenyls