Abstract
In this paper we study industrial contaminated soils in an area near Estarreja, close to Aveiro in central Portugal. The industries are the main source of pollution in this area, since one of the most important chemical industrial perimeters is located within the study area Those industries are responsible for the contamination of soils and local aquifers mainly by Cu, Pb, Zn and As. Until 1975 the liquid effluents, produced by these industrial units, were discharged directly to several streams. These discharges contained different types of contaminants. The industrial units have also rejected huge quantities of solid waste. A geological soil survey was conducted to identify the origin of the contaminationand to map the most important contaminated areas. Geochemical data were interpreted by multivariate geostatistical techniques and by Factorial Kriging, to understand and identify spatial components acting at several scales and allowing the identificationof trace metal common sources. A comparisonbetween the mapping of the different spatial components and of the initial variables logaritmized values as well as the results of the Factorial Analysis of Corregionalization allowed the perception of the variables different behaviour at different scales (punctual, local and regional).The methodology used is an important tool for the separation between the geological and anthropic inputs and for the identification of common pollution sources.
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Batista, A.C., Ferreira da Silva, E.A., Sousa, A.J., Fonseca, E.C. (2001). Factorial Kriging Applied to the Study of Industrial Contaminated Soils. In: Monestiez, P., Allard, D., Froidevaux, R. (eds) geoENV III — Geostatistics for Environmental Applications. Quantitative Geology and Geostatistics, vol 11. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0810-5_36
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DOI: https://doi.org/10.1007/978-94-010-0810-5_36
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