Linking oral bioaccessibility and solid phase distribution of potentially toxic elements in extractive waste and soil from an abandoned mine site: Case study in Campello Monti, NW Italy

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dc.contributor.authorMehta, Neha
dc.contributor.authorCocerva, Tatiana
dc.contributor.authorCipullo, Sabrina
dc.contributor.authorPadoan, Elio
dc.contributor.authorDino, Giovanna Antonella
dc.contributor.authorAjmone-Marsan, Franco
dc.contributor.authorCox, Siobhan Fiona
dc.contributor.authorCoulon, Frederic
dc.contributor.authorDe Luca, Domenico Antonio
dc.date.accessioned2018-10-19T09:05:39Z
dc.date.available2018-10-19T09:05:39Z
dc.date.issued2018-10-11
dc.description.abstractOral bioaccessibility and solid phase distribution of potentially toxic elements (PTE) from extractive waste streams were investigated to assess the potential human health risk posed by abandoned mines. The solid phase distribution along with micro-X-ray fluorescence (micro-XRF) and scanning electron microscopy (SEM) analysis were also performed. The results showed that the total concentrations of PTE were higher in <250 μm size fractions of waste rock and soil samples in comparison to the <2 mm size fractions. Mean value of total concentrations of chromium(Cr), copper (Cu), and nickel (Ni) in waste rocks (size fractions <250 μm) were found to be 1299, 1570, and 4010 mg/kg respectively due to the parent material. However, only 11% of Ni in this sample was orally bioaccessible. Detailed analysis of the oral bioaccessible fraction (BAF, reported as the ratio of highest bioaccessible concentration compared with the total concentration from the 250 μm fraction) across all samples showed that Cr, Cu, and Ni varied from 1 to 6%, 14 to 47%, and 5 to 21%, respectively. The variation can be attributed to the difference in pH, organic matter content and mineralogical composition of the samples. Non-specific sequential extraction showed that the non-mobile forms of PTE were associated with the clay and Fe oxide components of the environmental matrices. The present study demonstrates how oral bioaccessibility, solid phase distribution and mineralogical analysis can provide insights into the distribution, fate and behaviour of PTE in waste streams from abandoned mine sites and inform human health risk posed by such sites.en_UK
dc.identifier.citationNeha Mehta, Tatiana Cocerva, Sabrina Cipullo, et al., Linking oral bioaccessibility and solid phase distribution of potentially toxic elements in extractive waste and soil from an abandoned mine site: Case study in Campello Monti, NW Italy. Science of The Total Environment, Volume 651, Part 2, 15 February 2019, pp. 2799-2810en_UK
dc.identifier.issn0048-9697
dc.identifier.urihttps://doi.org/10.1016/j.scitotenv.2018.10.115
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/13545
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectAbandoned mine siteen_UK
dc.subjectOral bioaccessibilityen_UK
dc.subjectPotentially toxic elements (PTE)en_UK
dc.subjectRisk assessmenten_UK
dc.subjectSolid phase distributionen_UK
dc.titleLinking oral bioaccessibility and solid phase distribution of potentially toxic elements in extractive waste and soil from an abandoned mine site: Case study in Campello Monti, NW Italyen_UK
dc.typeArticleen_UK

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