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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Bioconcentration factors and the risk concentrations of potentially toxic elements in garden soils

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Friol Boim, Alexys Giorgia [1] ; Azevedo Melo, Leonidas Carrijo [2] ; Moreno, Fabio Netto [3] ; Ferracciu Alleoni, Luis Reynaldo [1]
Total Authors: 4
[1] Univ Sao Paulo, Dept Soil Sci, Coll Agr Luiz de Queiroz ESALQ, BR-13418900 Piracicaba, SP - Brazil
[2] Univ Lavras UFLA, Dept Soil Sci, BR-37200000 Lavras, MG - Brazil
[3] Environm Agcy Sao Paulo State CETESB, BR-05459900 Sao Paulo, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Journal of Environmental Management; v. 170, p. 21-27, APR 1 2016.
Web of Science Citations: 11

Empirical models describe soil-plant transfers to explain the variations in the occurrence of potentially toxic elements (PTE) in soils and to estimate the Bioconcentration Factor (BCF). In this study, results were selected based on data in the literature on soils of humid tropical and temperate regions to evaluate soil plant transfer models, to calculate the BCF and to derive risk concentrations of Cu, Cr, Pb, Ni and Zn present in the exposure pathway leading to the consumption of contaminated vegetables. The Cetesb (Environmental Agency of the State of Sao Paulo, Brazil) mathematical model was used to derive the risk posed by soil concentrations in urban and rural exposure scenarios. The results of the pseudo total contents of NI, in the soil and the contents absorbed by plants were compared and the BCFs were calculated by the use of geometric means, including a correction factor appropriate to each particular type of soil. Differences were observed between BCFs calculated for each climate region: humid tropical (HTR) and temperate (TE), which the first one presented the highest values to BCF in leaves and the lowest BCF values for root, except Ni, compared to second one. The soil concentrations with the highest risk were found in humid tropical regions as compared with those found in temperate regions, except for Ni. The obtained BCFs may contribute to any future revisions of guideline values as well as help other state environmental agencies to establish their own guideline values. (C) 2016 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 12/10591-3 - Derivation of critical limits of Cr, Cu, Ni, Pb and Zn in soils
Grantee:Alexys Giorgia Friol Boim
Support Opportunities: Scholarships in Brazil - Master