Soil contamination from urban and industrial activity: example of the mining district of Linares (southern Spain) |
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| Authors: | J Martínez J F Llamas E de Miguel J Rey M C Hidalgo |
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| Institution: | (1) Dpto. de Ingeniería Mecánica y Minera, EPS de Linares, Universidad de Jaén, Linares (Jaén), Spain;(2) Dpto. de Ingeniería Química y Combustibles E.T.S.I.M, Universidad Politécnica de Madrid, Madrid, Spain;(3) Dpto. de Geología, EPS de Linares, Universidad de Jaén, Linares (Jaén), Spain |
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| Abstract: | The Linares region (southern Spain) has been subjected to two important sources of pollution: the intensive mining works and
the urban-industrial activity. To obtain a geochemical characterisation of the soil, 31 trace elements were analysed and 669
soil samples were collected. By means of clustering analysis, we identified groups of elements and grid squares in which relations
could be established concerning soil lithology, urban and industrial activities and the degree of pollution impact; in addition,
we were able to characterise the geochemical background of the study area. The multivariate study led us to identify four
factors. Particularly important was factor 2, which represented the elements associated with mineral paragenesis (Cu, Pb,
As, Co, Mn, Zn, Sn, Ba). This factor also contains elements related with an urban-industrial activity, such as Pb, Cu, Zn,
As and Ba. Furthermore, we identified factor 4, associating Ni, V and Cr, and which is related to the use of fuels. |
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| Keywords: | Heavy metals Soil pollution Multivariate analysis Linares mines |
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