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Heavy metals in the surface sediments of the tidal river Tinto (SW Spain)

Francisco Cabrera,B. Conde,V. Flores-1992-01-01-DIGITAL.CSIC (Spanish National Research Council (CSIC))
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TL;DRAbstract

Summary: Intertidal surface sediments (0-10 cm) of the tidal River Tinto are highly polluted by heavy metals. Mean values of Zn (1814 mg/kg), Cu (2196 mg/kg), Pb (4241 mg/kg), Mo (41 mg/kg), Hg (11 mg/kg) and Cd (12 mg/kg), are respectively 19,49,212, 16,61 and 55 times higher than the natural background. Values of Cd and Hg are of the same order or higher than those for sediments of the most polluted estuaries in the world. Heavy metal contents in crease seawards and with the pelite, TOC and Kjeldhal-N contents.

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Summary: Intertidal surface sediments (0-10 cm) of the tidal River Tinto are highly polluted by heavy metals. Mean values of Zn (1814 mg/kg), Cu (2196 mg/kg), Pb (4241 mg/kg), Mo (41 mg/kg), Hg (11 mg/kg) and Cd (12 mg/kg), are respectively 19,49,212, 16,61 and 55 times higher than the natural background. Values of Cd and Hg are of the same order or higher than those for sediments of the most polluted estuaries in the world. Heavy metal contents in crease seawards and with the pelite, TOC and Kjeldhal-N contents.

Keywords

EstuaryEnvironmental chemistryHeavy metalsSedimentIntertidal zonePeliteCadmiumGeology

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