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Source Apportionment and Ecological Risk of Heavy Metals and Metalloids in Soils of the Zacatecas Mining District, Mexico: An Integrated Geoaccumulation and Multivariate Approach
Five centuries of silver mining have left extensive metal-bearing waste around Zacatecas City, Mexico, yet the spatial structure, severity and sources of the resulting soil contamination remain poorly quantified. We determined Cr, Co, Ni, Cu, Zn, As and Pb by ICP-MS in 40 surface soils from four
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