Polychlorinated biphenyl and organochlorine pesticide contamination signatures in deep-sea fish from the Mediterranean Sea.
Polychlorinated biphenyl (PCB) and OCP concentrations were determined in the livers of two deep-sea fish species, roughsnout grenadier and hollowsnout grenadier, from the Adriatic Sea. In both species, contaminant concentrations were in the following order: PCBs>DDTs>>HCB. Contaminant load was higher in roughsnout grenadier (PCB: 12,327ngg(-1); DDTs: 5357ngg(-1); HCB: 13.1ngg(-1)) than in hollowsnout grenadier (PCB: 1234ngg(-1); DDTs: 763ngg(-1); HCB 6.3ngg(-1)). PCB patterns were dominated by higher chlorinated congeners (hexa-CBs: 50.3-52.1%, hepta-CBs: 29.6-35.5%, penta-CBs: 8.0-11.1% and octa-CBs :5.2-5.4%). PCBs 138, 153 180 and 187 were the most abundant. Regarding the DDT pattern, p,p'-DDE was prevalent in both species (roughsnout grenadier: 99.7%, hollowsnout grenadier: 90%), suggesting no recent DDT input. In both species, the total 2,3,7,8-tetrachlorodibenzo-p-dioxin toxic equivalent (TEQ) concentrations (roughsnout grenadier: mean 43.77pg/g, hollowsnout grenadier: mean 20.49pg/g), calculated from non- and mono-ortho PCBs, reached those encountered in marine organisms at higher levels in the trophic chain.
Storelli
M M
MM
Pharmacological-Biological Department-Chemistry and Biochemistry Section, Veterinary Medicine Faculty, University of Bari-Strada Prov. le per Casamassima Km 3, 70010 Valenzano (Ba), Italy. m.m.storelli@veterinaria.uniba.it
Losada
S
S
Marcotrigiano
G O
GO
Roosens
L
L
Barone
G
G
Neels
H
H
Covaci
A
A
D000818:Animals; D048388:Gadiformes / Q000378:metabolism*; D008401:Gas Chromatography-Mass Spectrometry / Q000662:veterinary; D006843:Hydrocarbons, Chlorinated / Q000032:analysis* / Q000493:pharmacokinetics; D008099:Liver / Q000737:chemistry* / Q000378:metabolism; D008522:Mediterranean Sea; D011078:Polychlorinated Biphenyls / Q000032:analysis* / Q000493:pharmacokinetics; D018709:Statistics, Nonparametric; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000493:pharmacokinetics
D006843:Hydrocarbons, Chlorinated; D014874:Water Pollutants, Chemical; D011078:Polychlorinated Biphenyls