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Título: | Distribution of heavy metal contents of urban soils in parks of Seville |
Autor: | Madrid, Luis CSIC; Díaz Barrientos, Encarnación CSIC; Madrid Díaz, Fernando CSIC ORCID | Fecha de publicación: | 2002 | Editor: | Pergamon Press | Citación: | Chemosphere 49(10): 1301-1308 (2002) | Resumen: | Several metals in urban soils of Seville were extracted by two methods, which respectively give estimates of the available and 'quasi total' contents. Although the soils did not show strong heterogeneity in their general properties, high dispersion of the contents in those metals with greater relative availability, Cu, Pb and Zn, as compared to others suggested that pollution with these three metals could occur in some sampling sites. It was shown that the contents in these metals tend to increase as the historic quarters of the city are approached. Using reference values given by the Québec Ministry of Environment it was shown that those green areas closer to the historic centre present contents in Pb, Zn and particularly Cu that often exceed the acceptable limits for residential, recreational and institutional sites. From background contents for Seville soils estimated from a park located on the outskirts, a pollution load index (PLI) for each sampling site was calculated for the set of these three metals. It was shown that the PLI tends to increase as traffic density increases and as distance from main traffic decreases, but poor regressions were obtained, suggesting that other variables different from traffic should be considered. | URI: | http://hdl.handle.net/10261/64706 | DOI: | 10.1016/S0045-6535(02)00530-1 | Identificadores: | doi: 10.1016/S0045-6535(02)00530-1 issn: 0045-6535 e-issn: 1879-1298 |
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