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Título: | Legacy and emergent persistent organic pollutants (POPs) in NW Mediterranean deep-sea organisms |
Autor: | Koenig, Samuel CSIC; Huertas, David CSIC; Fernández Ramón, M. Pilar CSIC ORCID | Palabras clave: | Persistent organic pollutants Polybrominated diphenyl ether Deep-sea Fish Crustacea Mediterranean Sea POPs PBDE |
Fecha de publicación: | ene-2013 | Editor: | Elsevier | Citación: | Science of the Total Environment 443: 358-366 (2013) | Resumen: | The levels and profiles of organochlorine (OC) contaminants, including polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethanes (DDTs), hexachlorocyclohexanes (HCHs) and penta- (PeCB) and hexachlorobenzene (HCB), as well as polybrominated diphenyl ethers (PBDEs) were determined in muscle samples of the deep-sea fish Alepocephalus rostratus, Coelorinchus mediterraneus and Lepidion lepidion and the red-shrimp Aristeus antennatus from the NW Mediterranean Sea. Mean PCB and DDT levels ranged from the highest concentrations in the fish A. rostratus (Σ7PCBs 6.93 ± 0.71 ng/g w.w. and ΣDDTs 8.43 ± 1.10 ng/g w.w.) to the lowest concentrations in the crustacean A. antennatus (Σ7PCBs 1.17 ± 0.24 ng/g w.w. and ΣDDTs 2.53 ± 0.26 ng/g w.w.). The concentrations of ΣHCHs and HCB were more than one order of magnitude lower, ranging from 0.07–0.36 ng/g w.w. and 0.03–0.15 ng/g w.w., respectively, while PeCB was only detected in a few samples. PBDE levels were approximately ten times lower than PCB and DDT concentrations, ranging from 0.47 ± 0.20 ng/g w.w. in A. antennatus to 0.92 ± 0.13 ng/g w.w. in A. rostratus. The high-molecular-weight PCBs 153, 138 and 180 represented 69–79% of Σ7PCBs in fish and 60% in the red shrimp. Moreover, in fish, the main DDT compound detected was the metabolite p,p′-DDE (70–80% of ΣDDTs), indicative of old DDT residues. In contrast, o,p′-DDE was the main DDT metabolite (49% of ΣDDTs) in shrimp, while the parent compound p,p′-DDT and its metabolite p,p′-DDE exhibited similar proportions of 16% and 21%, respectively. For PBDEs, the most abundant congeners were BDEs 28, 47, 99, 100 and 154 in fish (> 70% Σ14PBDEs), while BDEs 153 and 209 were also important in A. antennatus, suggesting different uptake and/or biotransformation rates of PBDEs between fish and crustacea. In this sense, the ratios BDE 99/100, BDE 153/154, and BDE 47/99 were determined as proxies for BDE metabolization capacities and contrasted among species | Descripción: | 9 pages, 4 figures, 4 tables | Versión del editor: | https://doi.org/10.1016/j.scitotenv.2012.10.111 | URI: | http://hdl.handle.net/10261/74661 | DOI: | 10.1016/j.scitotenv.2012.10.111 | ISSN: | 0048-9697 | E-ISSN: | 1879-1026 |
Aparece en las colecciones: | (ICM) Artículos (IDAEA) Artículos |
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