Mercury and other trace elements in soils affected by the mine tailing spill in Aznalcóllar (SW Spain)

Mercury and other trace elements in soils affected by the mine tailing spill in Aznalcóllar (SW Spain)

7 pages, 9 figures, 2 tables, 31 references. We wish to thank Mr. J.A. Diez de la Cortina for assistance with the maps. The authors thank Prof. N. Lepp for his helpful comments.

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Bibliographic Details
Main Authors: Cabrera, Francisco, Ariza, J., Madejón, Paula, Madejón, Engracia, Murillo Carpio, José Manuel
Other Authors: Comisión Interministerial de Ciencia y Tecnología, CICYT (España)
Format: artículo biblioteca
Language:English
Published: 2008-02-15T19:55:48Z
Subjects:Soil contamination, Mercury, Trace elements, Aznalcóllar, Guadiamar,
Online Access:http://hdl.handle.net/10261/4515
http://dx.doi.org/10.13039/501100007273
http://dx.doi.org/10.13039/501100011011
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spelling dig-irnas-es-10261-45152018-09-13T07:21:39Z Mercury and other trace elements in soils affected by the mine tailing spill in Aznalcóllar (SW Spain) Cabrera, Francisco Ariza, J. Madejón, Paula Madejón, Engracia Murillo Carpio, José Manuel Comisión Interministerial de Ciencia y Tecnología, CICYT (España) Ministerio de Educación y Ciencia (España) Junta de Andalucía Soil contamination Mercury Trace elements Aznalcóllar Guadiamar 7 pages, 9 figures, 2 tables, 31 references. We wish to thank Mr. J.A. Diez de la Cortina for assistance with the maps. The authors thank Prof. N. Lepp for his helpful comments. The Aznalcóllar accident (28thApril 1998) occurred because the collapse of the tailing-damdike of the Aznalcóllar–Los Frailes mines. Soilswere affected by a slurry of acidic water loadedwith trace elements, finely divided metal sulphides, and materials used in the refining /floating process. Studies carried out before and after the soil restoration activities (sludge removal, amending, tilling, and afforestation) showed severe trace-element contamination (mainly As, Cd, Cu, Pb, Tl and Zn) in the superficial layer of the sludge-affected soils. Despite Hg being an important component of the Los Frailes ore and therefore of the contaminant sludge, data on Hg content of sludge-affected soils are scarce and sometimes controversial. The aim of this study was to determine the effect of the spill and of restoration measures on the Hg content of soils and how this related to other elements. Concentration of Hg immediately after the spill was 8-fold above background (0.061±0.012mgkg−1;mean±SD) at the surface (0–5 cm)and 3–4- fold greater in deeper layers (0–20; 0–50 cm). After the remediation measures, mean values of Hg and other elements (As, Cd, Cu, Pb and Zn) were very variable and remained above background values. These anomalies are due to the sludge left on the soil surface or buried during restoration operations, resulting in an irregular distribution of trace elements. The highest values for the lessmobile elements (up to 176 mg kg−1 As, 2.36 mg kg−1 Hg and 1556 mg kg−1 Pb) were observed in the area 15 km downstream of the tailings dam. This study was carried out in the framework of the projects REN 2000-1519 TECNO and CTM 2004-01985 TECNO supported by the CICYT of the Ministerio de Ciencia y Tecnología and the Ministerio de Educación y Ciencia of Spain, and of the PICOVER research program of the Consejería de Medio Ambiente of the regional government (Junta de Andalucía). Peer reviewed 2008-05-23T19:55:48Z 2008-05-23T19:55:48Z 2008-02-15T19:55:48Z artículo http://purl.org/coar/resource_type/c_6501 Science of the Total Environment 390 (2-3): 311-322 (2008) 0048-9697 http://hdl.handle.net/10261/4515 10.1016/j.scitotenv.2007.10.002 http://dx.doi.org/10.13039/501100007273 http://dx.doi.org/10.13039/501100011011 en http://dx.doi.org/10.1016/j.scitotenv.2007.10.002 none 1167411 bytes application/pdf
institution IRNAS ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-irnas-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del IRNAS España
language English
topic Soil contamination
Mercury
Trace elements
Aznalcóllar
Guadiamar
Soil contamination
Mercury
Trace elements
Aznalcóllar
Guadiamar
spellingShingle Soil contamination
Mercury
Trace elements
Aznalcóllar
Guadiamar
Soil contamination
Mercury
Trace elements
Aznalcóllar
Guadiamar
Cabrera, Francisco
Ariza, J.
Madejón, Paula
Madejón, Engracia
Murillo Carpio, José Manuel
Mercury and other trace elements in soils affected by the mine tailing spill in Aznalcóllar (SW Spain)
description 7 pages, 9 figures, 2 tables, 31 references. We wish to thank Mr. J.A. Diez de la Cortina for assistance with the maps. The authors thank Prof. N. Lepp for his helpful comments.
author2 Comisión Interministerial de Ciencia y Tecnología, CICYT (España)
author_facet Comisión Interministerial de Ciencia y Tecnología, CICYT (España)
Cabrera, Francisco
Ariza, J.
Madejón, Paula
Madejón, Engracia
Murillo Carpio, José Manuel
format artículo
topic_facet Soil contamination
Mercury
Trace elements
Aznalcóllar
Guadiamar
author Cabrera, Francisco
Ariza, J.
Madejón, Paula
Madejón, Engracia
Murillo Carpio, José Manuel
author_sort Cabrera, Francisco
title Mercury and other trace elements in soils affected by the mine tailing spill in Aznalcóllar (SW Spain)
title_short Mercury and other trace elements in soils affected by the mine tailing spill in Aznalcóllar (SW Spain)
title_full Mercury and other trace elements in soils affected by the mine tailing spill in Aznalcóllar (SW Spain)
title_fullStr Mercury and other trace elements in soils affected by the mine tailing spill in Aznalcóllar (SW Spain)
title_full_unstemmed Mercury and other trace elements in soils affected by the mine tailing spill in Aznalcóllar (SW Spain)
title_sort mercury and other trace elements in soils affected by the mine tailing spill in aznalcóllar (sw spain)
publishDate 2008-02-15T19:55:48Z
url http://hdl.handle.net/10261/4515
http://dx.doi.org/10.13039/501100007273
http://dx.doi.org/10.13039/501100011011
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