Metals in particle-size fractions of the soils of five European cities

Ajmone-Marsan, F. and Biasioli, M. and Kralj, T. and Grcman, H. and Davidson, C.M. and Hursthouse, A.S. and Madrid, L. and Rodrigues, S. (2008) Metals in particle-size fractions of the soils of five European cities. Environmental Pollution, 152 (1). pp. 73-81. ISSN 0269-7491

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Abstract

Soils from Aveiro, Glasgow, Ljubljana, Sevilla and Torino have been investigated in view of their potential for translocation of potentially toxic elements (PTE) to the atmosphere. Soils were partitioned into five size fractions and Cr, Cu, Ni, Pb and Zn were measured in the fractions and the whole soil. All PTE concentrated in the <10 μm fraction. Cr and Ni concentrated also in the coarse fraction, indicating a lithogenic contribution. An accumulation factor (AF) was calculated for the <2 and <10 μm fraction. The AF values indicate that the accumulation in the finer fractions is higher where the overall contamination is lower. AF for Cr and Ni are particularly low in Glasgow and Torino. An inverse relationship was found between the AF of some metals and the percentage of <10 μm particles that could be of use in risk assessment or remediation practices. Metals in size fractions of urban soils.