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Title: Relationships between polychlorinated biphenyls in molluscs, hydrological characteristics and human pressures, within Basque estuaries (northern Spain)
Authors: Solaun, Oihana; Rodriguez, Jose German; Borja, Angel; Larreta, Joana; Valencia, V.
Citation: CHEMOSPHERE, 2015, 118, 130-135
Abstract: Interannual variability of polychlorinated biphenyls (PCBs), measured in the soft tissues of Mytilus galloproyincialis mussels and Crassostrea gigas oysters, collected from estuarine waters within the Basque Country (Bay of Biscay), are investigated. Samples were collected in the autumn, between 2002 and 2011. Sites located within the ports of Bilbao and Pasaia showed the highest PCBs concentrations in molluscs; the lowest were observed in the mouth of the Oka estuary, an area of low population and industrial activity. Congener profiles of PCBs in the tissues of molluscs reveal the predominance of hexachlorobiphenyls (CB153 and CB138). In addition, redundancy analysis has shown that residence time, river flow and a `pressure index' explain 57\% of the variability in the PCB congener concentrations (the higher the values of these variables, the higher the concentration). Finally, Sigma 7PCB median concentrations in molluscs and sediments, collected from nearby sampling sites, were found to be moderately correlated (r(2) = 0.513, p < 0.01). (c) 2014 Elsevier Ltd. All rights reserved.
Keywords: Molluscs; Sediments; PCBs; Hydrological characteristics; Human pressures; Basque Country; PERSISTENT ORGANIC POLLUTANTS; MYTILUS-GALLOPROVINCIALIS; ORGANOCHLORINE COMPOUNDS; METHODOLOGICAL APPROACH; RISK-ASSESSMENT; HEAVY-METALS; MUSSEL WATCH; BLUE MUSSELS; CONTAMINANTS; PCBS
Issue Date: 2015
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Type: Article
Language: English
DOI: 10.1016/j.chemosphere.2014.07.053
URI: http://dspace.azti.es/handle/24689/298
ISSN: 0045-6535
E-ISSN: 1879-1298
Appears in Publication types:Artículos científicos



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