English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/37821
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Heavy metal pollution of soils affected by the Guadiamar toxic flood.

AuthorsCabrera, Francisco ; Clemente Salas, Luis ; Díaz Barrientos, Encarnación ; López Núñez, Rafael ; Murillo Carpio, José Manuel
KeywordsSoil
Heavy metals
Pollution
Soil texture
Issue Date1999
PublisherElsevier
CitationThe Science of the Total Environment 242: 117-129 (1999)
AbstractTotal heavy metal concentrations were determined in soil samples of seven selected areas along the Guadiamar river valley affected by the toxic flood, after removal of the deposited sludge. Mean total concentrations of nine elements As, Au, Bi, Cd, Cu, Pb, Sb, Tl and Zn. out of the 23 As, Au, Ba, Be, Bi, Cd, Co, Cr, Cu, In, Mn, Mo, Ni, Pb, Sb, Sc, Sn, Th, Tl, U, V, Y and Zn. analysed were higher in sludge-covered soils than in unaffected soils. Mean values of total As, Au, Pb, Sb, Tl and Zn in sludge-affected soils were higher than the upper limits for normal soils world-wide. Mean concentrations of Bi, Cd and Cu were within these ranges, although some individual values exceeded the upper limits. In all sampling areas, severe heavy metal pollution was observed in the superficial layers 0]20 cm. of most of the affected soils, which decreased downward in the soil profile. Generally, in soils with more than 25% of clay, concentration of heavy metals below the 20-cm depth decreased to values close to those of the background level of the Guadiamar valley soils, while in coarser soils, heavy metal pollution penetrated below this depth, being noticeable down to a depth of at least 50]80 cm.
Description13 pages, 5 figures, 5 tables, 20 references.
Publisher version (URL)http://dx.doi.org/10.1016/S0048-9697(99)00379-4
URIhttp://hdl.handle.net/10261/37821
DOI10.1016/S0048-9697(99)00379-4
ISSN0048-9697
Appears in Collections:(IRNAS) Artículos
Files in This Item:
File Description SizeFormat 
Heavy metal.pdf444,83 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.