Brominated dioxins (PBDD/Fs) and PBDEs in marine shellfish in the UK

Autor:	Alwyn Fernandes, Martin Rose, Pamela Dicks, Shaun White, Frankie Smith, Martin Gem, David Mortimer
Rok vydání:	2009
Předmět:	Cerastoderma edule animal structures Health Toxicology and Mutagenesis Food Contamination Dioxins Toxicology Bromine Compounds Polybrominated diphenyl ethers Animals Humans Water Pollutants Ostrea edulis Shellfish biology fungi Public Health Environmental and Occupational Health General Chemistry General Medicine biology.organism_classification United Kingdom Mytilus Diet Congener Environmental chemistry Crassostrea Polybrominated Biphenyls Environmental Monitoring Food Science
Zdroj:	University of Manchester-PURE
ISSN:	1944-0057 1944-0049
Popis:	The occurrence of brominated dioxins (PBDD/Fs) and polybrominated diphenyl ethers (PBDEs) was investigated in commonly consumed species of marine shellfish in the UK. Individual samples of Pacific oysters (Crassostrea gigas), native oysters (Ostrea edulis), mussels (Mytilus edulis), scallops (Pecten maximus), and cockles (Cerastoderma edule) were collected from different coastal regions between 2006 and 2007. Samples of a particular species from each site were composited and 60 samples were analysed. Polybrominated dibenzofurans (PBDFs) occurred more frequently and generally at a higher level than polybrominated dibenzodioxins (PBDDs), except for 237-TriBDD, which was the predominant PBDD/F congener in some species, notably oysters. This profile may reflect the environmental distribution of these compounds and the effects of removal mechanisms, such as degradation, selective uptake and metabolism. PBDEs were detected in all samples. The dominant congeners were BDEs 47, 49, 99 and 100 and, to a lesser extent, BDEs 66 and 154. The occurrence of BDE-209 was observed in most samples and appears to be species selective, with the highest values occurring almost exclusively in mussels and cockles. Among the species studied, oysters and mussels displayed relatively higher levels of both sets of contaminants; native oysters, in particular, showed elevated levels of 237-TriBDD (up to 14.5 ng/kg). In general, contaminant levels appeared to be consistent with the extent of local industrialisation with lower levels observed in more remote areas such as the north of Scotland. Polybrominated biphenyls (PBBs) were also measured, and PBBs 49, 52 and 77 were the most frequently detected, although levels were very low. Dietary intakes, estimated for PBDD/Fs, showed that 237-TriBDD from single portions of oysters constituted a high proportion of the total dietary intake of the congener but, otherwise, dietary intakes of PBDD/Fs from shellfish were relatively low.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a96f032d0c9406eb17ac7ead7424213c https://doi.org/10.1080/02652030902803026 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
Nepřihlášeným uživatelům se plný text nezobrazuje	K zobrazení výsledku je třeba se přihlásit.