Estimating remobilization of potentially toxic elements in soil and road dust of an industrialized urban environment.

Autor: Botsou F; Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, University Campus, Zografou, 15784, Athens, Greece., Sungur A; Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Çanakkale Onsekiz Mart University, 17020, Çanakkale, Turkey., Kelepertzis E; Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, University Campus, 15784, ZografouAthens, Greece. kelepert@geol.uoa.gr., Kypritidou Z; Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, University Campus, 15784, ZografouAthens, Greece., Daferera O; Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, University Campus, 15784, ZografouAthens, Greece., Massas I; Laboratory of Soil Science and Agricultural Chemistry, Agricultural University of Athens, 11855, Athens, Greece., Argyraki A; Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, University Campus, 15784, ZografouAthens, Greece., Skordas K; Department of Ichthyology and Aquatic Environment, School of Agricultural Sciences, University of Thessaly, Volos, Greece., Soylak M; Department of Chemistry, Faculty of Sciences, Erciyes University, 38039, Kayseri, Turkey.
Jazyk: angličtina
Zdroj: Environmental monitoring and assessment [Environ Monit Assess] 2022 Jun 23; Vol. 194 (8), pp. 526. Date of Electronic Publication: 2022 Jun 23.
DOI: 10.1007/s10661-022-10200-x
Abstrakt: The mobility of potentially toxic elements (PTEs) is of paramount concern in urban settings, particularly those affected by industrial activities. Here, contaminated soils and road dusts of the medium-size, industrialized city of Volos, Central Greece, were subjected to single-step extractions (0.43 M HNO 3 and 0.5 M HCl) and the modified BCR sequential extraction procedure. This approach will allow for a better understanding of the geochemical phase partitioning of PTEs and associated risks in urban environmental matrices. Based on single extraction procedures, Pb and Zn exhibited the highest remobilization potential. Of the non-residual phases, the reducible was the most important for Pb, and the oxidizable for Cu and Zn in both media. On the other hand, mobility of Ni, Cr, and Fe was low, as inferred by their dominance into the residual fraction. Interestingly, we found a significant increase of the residual fraction in the road dust samples compared to soils. Carbonate content and organic matter controlled the extractabilities of PTEs in the soil samples. By contrast, for the road dust, magnetic susceptibility exerted the main control on the geochemical partitioning of PTEs. We suggest that anthropogenic particles emitted by heavy industries reside in the residual fraction of the SEP, raising concerns about the assessment of this fraction in terms of origin of PTEs and potential environmental risks. Conclusively, the application of sequential extraction procedures should be complemented with source identification of PTEs with the aim to better estimate the remobilization of PHEs in soil and road dust influenced by industrial emissions.
(© 2022. The Author(s), under exclusive licence to Springer Nature Switzerland AG.)
Databáze: MEDLINE
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