Occurrence and spatial distribution of chemical contaminants in edible fish species collected from UK and proximate marine waters.

Autor: Fernandes AR; Fera Science Ltd, Sand Hutton, York YO41 1LZ, UK. Electronic address: Alwyn.Fernandes@uea.ac.uk., Mortimer D; Food Standards Agency, Aviation House, 125 Kingsway, London WC2B 6NH, UK., Holmes M; School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK., Rose M; Fera Science Ltd, Sand Hutton, York YO41 1LZ, UK., Zhihua L; School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK; School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China., Huang X; School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK; School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China., Smith F; Fera Science Ltd, Sand Hutton, York YO41 1LZ, UK., Panton S; Fera Science Ltd, Sand Hutton, York YO41 1LZ, UK., Marshall L; School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK.
Jazyk: angličtina
Zdroj: Environment international [Environ Int] 2018 May; Vol. 114, pp. 219-230. Date of Electronic Publication: 2018 Mar 06.
DOI: 10.1016/j.envint.2018.02.047
Abstrakt: The occurrence of a range of regulated and emerging organic environmental contaminants was investigated in 182 samples of edible marine fish sampled mainly from UK marine regions, but extending northerly to the coast of Norway and south to the Algarve. These species (sprats, mackerel, turbot, halibut, herring, grey mullet, sea bass, grey mullet, sardines, etc.) are among those considered to be at the highest risk of contamination with regulated contaminants such as polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs, dioxins), and polychlorinated biphenyls (PCBs), but the occurrence of polybrominated diphenylethers (PBDEs) and polybrominated biphenyls (PBBs) was also investigated. Sub-sets of samples (50-75) were also analysed for emerging contaminants: polychlorinated naphthalenes (PCNs), polybrominated and mixed halogenated dibenzo-p-dioxins, dibenzofurans and biphenyls (PBDD/Fs, PXDD/Fs and PXBs) and perfluoroalkyl substances (PFAS). Contaminant occurrence varied with species and location, but all measured contaminants were detected, with sprats, sea bass, sardines, mackerel, and herring showing higher tissue concentrations. The concentrations of the different contaminants in the various samples were mapped utilising the GPS coordinate data of the capture locations to visualise spatial distribution levels. In terms of catch location, fish sampled from the coasts of southern Britain, north-western France and the Irish Sea appeared to contain proportionately higher levels of some contaminants - e.g. samples from the Irish Sea tended to show higher PCN concentrations, whereas higher levels of PCBs were observed in some fish sampled off the coasts of northern France. Similarly, samples of mullet from the southeast coast of UK showed much higher concentrations of BDE-99 than the other regions. In terms of occurrence trends, PCDD/F and PCB concentrations show a modest decline over the last decade but where limited background data is available for emerging contaminants, there is no evidence of downward trends.
(Copyright © 2018 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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