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Abstract
Surface sediments collected from 10 stations of Taranto Gulf influenced by industrial waste waters were analysed for metals (Hg, Cd, Sn, As, Cu, Pb, Ni, V, Cr, Zn, Mn, Al and Fe), priority polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs). Data were compared with the published results from other coastal areas of the Mediterranean Sea and with Sediments Quality Guidelines (effect range low-effects range medium, threshold effects level-probable effects level indexes) for evaluation of probable toxic effects on marine organisms. Moreover, mean effects range medium (ERM) and mean probable effects level (PEL) quotients were used to evaluate the degree to which chemicals exceed guidelines. Results suggest an ecotoxicological risk for benthic organisms, mainly in sediments near ironed steel production plant of ILVA, where high concentrations of PAHs were found.