Polychlorinated biphenyl and organochlorine pesticide contamination signatures in deep-sea fish from the Mediterranean Sea

Environ Res. 2009 Oct;109(7):851-6. doi: 10.1016/j.envres.2009.07.008. Epub 2009 Aug 13.

Abstract

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.

MeSH terms

  • Animals
  • Gadiformes / metabolism*
  • Gas Chromatography-Mass Spectrometry / veterinary
  • Hydrocarbons, Chlorinated / analysis*
  • Hydrocarbons, Chlorinated / pharmacokinetics
  • Liver / chemistry*
  • Liver / metabolism
  • Mediterranean Sea
  • Polychlorinated Biphenyls / analysis*
  • Polychlorinated Biphenyls / pharmacokinetics
  • Statistics, Nonparametric
  • Water Pollutants, Chemical / analysis*
  • Water Pollutants, Chemical / pharmacokinetics

Substances

  • Hydrocarbons, Chlorinated
  • Water Pollutants, Chemical
  • Polychlorinated Biphenyls