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Real and simulated bioavailability of lead in contaminated and uncontaminated soils

BACKGROUND: Lead (Pb) is a toxic element that occurs in elevated concentrations in soils, mostly as a result of anthropogenic activities. This study assess the Pb bioavailability in soils from two areas with different contamination level using Diffusive Gradients in Thin-Films (DGT) technique, singl...

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Detalles Bibliográficos
Autor principal: Senila, Marin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4114113/
https://www.ncbi.nlm.nih.gov/pubmed/25097761
http://dx.doi.org/10.1186/2052-336X-12-108
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author Senila, Marin
author_facet Senila, Marin
author_sort Senila, Marin
collection PubMed
description BACKGROUND: Lead (Pb) is a toxic element that occurs in elevated concentrations in soils, mostly as a result of anthropogenic activities. This study assess the Pb bioavailability in soils from two areas with different contamination level using Diffusive Gradients in Thin-Films (DGT) technique, single extractions and metal contents of vegetables grown on contaminated soils. RESULTS: In the area situated far from mining and smelting activities, the pseudo total Pb concentration (12 – 51 mg kg(−1) dw) was found to be comparable to that normally found in unpolluted areas. In the area from the vicinity of the Pb smelter very high concentrations of pseudo-total Pb (850 – 9300 mg kg(−1) dw) were found. The average concentrations of Pb accumulated in onion, garlic, carrot, and parsley grown on this contaminated soils were 18, 48, 38 and 91 mg kg(−1) dw, respectively, and represent a risk factor for the consumers. CONCLUSIONS: The present study demonstrates the utility of DGT technique for the assessment of Pb bioavailability, since, generally, better correlations are obtained between the effective Pb concentration and Pb concentration in vegetables than for bioavailable Pb determined by chemical extractions and Pb concentration in vegetables.
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spelling pubmed-41141132014-08-05 Real and simulated bioavailability of lead in contaminated and uncontaminated soils Senila, Marin J Environ Health Sci Eng Research Article BACKGROUND: Lead (Pb) is a toxic element that occurs in elevated concentrations in soils, mostly as a result of anthropogenic activities. This study assess the Pb bioavailability in soils from two areas with different contamination level using Diffusive Gradients in Thin-Films (DGT) technique, single extractions and metal contents of vegetables grown on contaminated soils. RESULTS: In the area situated far from mining and smelting activities, the pseudo total Pb concentration (12 – 51 mg kg(−1) dw) was found to be comparable to that normally found in unpolluted areas. In the area from the vicinity of the Pb smelter very high concentrations of pseudo-total Pb (850 – 9300 mg kg(−1) dw) were found. The average concentrations of Pb accumulated in onion, garlic, carrot, and parsley grown on this contaminated soils were 18, 48, 38 and 91 mg kg(−1) dw, respectively, and represent a risk factor for the consumers. CONCLUSIONS: The present study demonstrates the utility of DGT technique for the assessment of Pb bioavailability, since, generally, better correlations are obtained between the effective Pb concentration and Pb concentration in vegetables than for bioavailable Pb determined by chemical extractions and Pb concentration in vegetables. BioMed Central 2014-07-14 /pmc/articles/PMC4114113/ /pubmed/25097761 http://dx.doi.org/10.1186/2052-336X-12-108 Text en Copyright © 2014 Senila; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited.
spellingShingle Research Article
Senila, Marin
Real and simulated bioavailability of lead in contaminated and uncontaminated soils
title Real and simulated bioavailability of lead in contaminated and uncontaminated soils
title_full Real and simulated bioavailability of lead in contaminated and uncontaminated soils
title_fullStr Real and simulated bioavailability of lead in contaminated and uncontaminated soils
title_full_unstemmed Real and simulated bioavailability of lead in contaminated and uncontaminated soils
title_short Real and simulated bioavailability of lead in contaminated and uncontaminated soils
title_sort real and simulated bioavailability of lead in contaminated and uncontaminated soils
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4114113/
https://www.ncbi.nlm.nih.gov/pubmed/25097761
http://dx.doi.org/10.1186/2052-336X-12-108
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