Journal
CHEMISTRY AND ECOLOGY
Volume 30, Issue 8, Pages 693-700Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02757540.2014.917175
Keywords
Basque Coast; Sediment Quality Guidelines; Water Framework Directive; PCB; marine sediments; PAH
Funding
- Basque Water Agency
- Spanish Ministry of Education and Sciences [CTM2006-13880-C03-03/MAR]
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Marine regional Sediment Quality Guidelines (SQG) for polychlorinated biphenyls (PCB) and polycyclic aromatic hydrocarbons (PAH) from the Basque coast (SE Bay of Biscay) were determined, on the basis of sediment chemistry, toxicity and benthic community disturbance from analysis of 756 estuarine and coastal samples. The SQG were calculated using a percentile approach (based upon effect and non-effect data), using non-normalised and normalised concentration, by total organic carbon. However, normalisation by total organic carbon did not result in any improvement in accuracy compared with non-normalised values. Hence, this study proposes non-normalised SQG values for assessment of the chemical and physicochemical status in marine waters in the Basque Country, within the Water Framework Directive: 24.6-29 mu gkg(-1) for total PCBs; 164-285 mu gkg(-1) for low molecular weight PAH; 922-1537 mu gkg(-1) for high molecular weight PAH; and 1607-2617 mu gkg(-1) for total PAH.
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