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Occurrence of polybrominated diphenylethers, polychlorinated dibenzo-p-dioxins, dibenzofurans and biphenyls in coastal sediments from Spain

AutorEljarrat, Ethel; Cal, Agustina de la; Larrazábal, David; Fabrellas, Begoña; Rodríguez Fernández-Alba, Amadeo; Borrul, Francesc; Marcé, R.; Barceló, Damià
Palabras claveDioxins
Fecha de publicación30-mar-2005
CitaciónEnvironmental Pollution 136(3): 493-501 (2005)
ResumenFifteen sediment samples were analysed in order to determine their content of polybrominated diphenylethers (PBDEs), polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs) and biphenyls (PCBs). Samples were collected from several hot spots on the Spanish coast, such as the harbours of Almeria and Tarragona, and the mouths of the Besós and Llobregat rivers in Barcelona. A generic analytical procedure based on Soxhlet extraction followed by an automated cleanup system and gas chromatography-ion trap-mass spectrometry was employed for determining the toxic congeners of PCDDs and PCDFs, as well as dioxin-like PCBs. As regards PBDE determinations, a rapid method based on the use of selective pressurized liquid extraction followed by gas chromatography-negative ion chemical ionization-mass spectrometry was applied. Total toxicity equivalent (WHO-TEQ) values were calculated using the toxicity equivalent factors proposed by WHO for dioxin-like PCBs, PCDDs and PCDFs. WHO-TEQ values ranged from 0.3 to 75 pg/g dry weight (dw), with PCB contribution on the toxicity of the samples between 1 and 84%. Total PBDE levels ranged from 2.7 to 134 ng/g dw, with BDE-209 contribution on the total PBDE contamination between 50 and 99%.
Decabrominated diphenyl ether makes a substantial contribution to the total PBDE contamination found in Spanish coastal sediments.
Descripción9 pages, 7 figures.-- PMID: 15862403 [PubMed].-- Printed version published Aug 2005.
Versión del editorhttp://dx.doi.org/10.1016/j.envpol.2004.12.005
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