Factores de enriquecimiento metálico en sedimentos holocenos del estuario del río Tinto (SO de España)

1. Carro, Berta M.
2. López González, Nieves
3. Lozano Soria, Olivia
4. Borrego Flores, José

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Andere Publikationen in: Geogaceta

Zusammenfassung

Metal concentration in sediments samples from two vibracores in the Tinto river estuary it has been determined. The enrichment factors (EF) of metal associated to sulphide deposits (Fe, Cu, Zn, Pb and As), in most cases, is over 2. Cu, Zn and As have much higher EF, over 10 in surficial samples. The progressive shallowness of the estuary has undergone a relative increase in acidic river water volume with respect to seawater. This effect has originated a downstream displacement of acid mixing processes affecting the estuary, which is reflected in higher metal concentration in sediments of the outer zones of the system.

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