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Pb–Zn–Cd–As Pollution in Soils Affected 1 by Mining Activities in Central and Southern 2 Spain: a Scattered Legacy Posing Potential 3 Environmental and Health Concerns

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Lillo, Javier y Oyarzun, Roberto y Esbrí, José María y García Lorenzo, María Luz y Higueras, Pablo (2015) Pb–Zn–Cd–As Pollution in Soils Affected 1 by Mining Activities in Central and Southern 2 Spain: a Scattered Legacy Posing Potential 3 Environmental and Health Concerns. In Environment, Energy and Climate Change I : environmental Chemistry of Pollutants and Wastes. The Handbook of Environmental Chemistry (32). Springer-Verlag, Berlín; Heidelberg, pp. 175-205. ISBN 978-3-319-12907-5

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URL Oficial: http://www.springer.com/gb/book/9783319129068



Resumen

In this chapter, published geochemical data for soils from several Pb–Zn mine sites and districts from Spain are reviewed. Although most of the mines have closed down, a legacy of highly polluted soils still remains throughout the sites constituting a potential hazard for the environment and human health. The fate of the studied metals and metalloids in these soils is mainly controlled by factors such as mining methods, concentration and metallurgical operations, mineralogy of the ore, gangue and host rock, fracturing of the host rocks, physiography, climate, and
soil types (pedogenic evolution). It can be concluded that the most polluted soils (identified on the basis of an enrichment factor) are those of the Sierra Minera (La Unión District – SE Spain), at more than 488 (Pb), 163 (Zn), 99 (Cd), and 1698 (As) times the background values from non-contaminated soils. Pb is usually related to As, which in turn is bound to Fe oxides and oxyhydroxides.Metal bearing jarosite and other soluble phases also play a relevant role in the studied soil–water systems, because these minerals are dissolved during intense rainy events, thus resulting in high rates of metal leaching and mobilization by runoff.


Tipo de documento:Sección de libro
Palabras clave:Arsenic, Environmental geochemistry, Iberian Peninsula, Metals, Mine sites, Soils
Palabras clave (otros idiomas):Arsénico; Geoquímica; Península Ibérica; Metales; Minas; Suelos
Materias:Ciencias > Geología > Geoquímica
Código ID:35605
Depositado:10 Feb 2016 10:01
Última Modificación:01 Ene 2017 00:01

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