Fraccionamiento metálico en sedimentos mareales de un estuario históricamente afectado por drenaje ácido de minas en el Río Guadiana

Delgado Rodríguez, Joaquín María; Barba Brioso, Cinta; Boski, Tomasz

Metal Fractionation in sediments ofan estuary historicallyaffected byAcid Mine Drainage; The Guadiana River

Author

Delgado Rodríguez, Joaquín María; Barba Brioso, Cinta; Boski, Tomasz
Publication Date

2010
Abstract

The metallic fractionation of the surface sediment from the Guadiana river estuary has been studied by a BCR-modified extraction, in order to identify the impacts of these metals in the ecosystem. In this sense, elements such as Co, Cr, Ni and Fe are found in natural concentrations in sediments, associated to the residual fraction, while others such as Cd, Zn, Mn, Cu, Pb and As have shown significative extraction rates mainly associated with FI (bioavailable), implying an environmental hazard to the Guadiana estuary. Elements as Zn (in high concentrations) and Cd (very toxic) are underlined by their environmental hazard, as they associate to the bioavailable fraction ofthe sediment (66 and 88% respectively)
URI

http://hdl.handle.net/10272/7881

Fichero	Tamaño	Formato	Ver	Description
Fraccionamiento-metalico.pdf	522.8Kb	PDF	View/Open

Fichero	Tamaño	Formato	Ver	Description
Fraccionamiento-metalico.pdf	522.8Kb	PDF	View/Open

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Geogaceta -- Nº 48, (2010)

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Fraccionamiento metálico en sedimentos mareales de un estuario históricamente afectado por drenaje ácido de minas en el Río Guadiana

Metal Fractionation in sediments ofan estuary historicallyaffected byAcid Mine Drainage; The Guadiana River

Author

Delgado Rodríguez, Joaquín María UHU Authority

; Barba Brioso, Cinta UHU Authority

; Boski, Tomasz

Publication Date

2010

Abstract

The metallic fractionation of the surface sediment from the Guadiana river estuary has been studied by a BCR-modified extraction, in order to identify the impacts of these metals in the ecosystem. In this sense, elements such as Co, Cr, Ni and Fe are found in natural concentrations in sediments, associated to the residual fraction, while others such as Cd, Zn, Mn, Cu, Pb and As have shown significative extraction rates mainly associated with FI (bioavailable), implying an environmental hazard to the Guadiana estuary. Elements as Zn (in high concentrations) and Cd (very toxic) are underlined by their environmental hazard, as they associate to the bioavailable fraction ofthe sediment (66 and 88% respectively)