Arsenic bioaccessibility in a gold mining area: a health risk assessment for children

Ono, Fabio Benedito and Guilherme, Luiz Roberto Guimaraes and Penido, Evanise Silva and Carvalho, Geila Santos and Hale, Beverley and Toujaguez, Regla and Bundschuh, Jochen (2012) Arsenic bioaccessibility in a gold mining area: a health risk assessment for children. Environmental Geochemistry and Health, 34 (4). pp. 457-465. ISSN 0269-4042

Abstract

High concentrations of total arsenic (As) have been measured in soils of gold mining areas of Brazil. However, bioaccessibility tests have not yet been conducted on those materials, which is essential for better health risk estimates. This study aimed at evaluating As bioaccessibility in samples from a gold mining area located in Brazil and assessing children's exposure to As-contaminated materials. Samples were collected from different materials (a control and four As-contaminated soils/sediments) found in a gold mine area located in Paracatu (MG), Brazil. Total and bioaccessible As concentrations were determined for all samples. The control soil presented the lowest As concentrations, while all other materials contained high total As concentrations (up to 2,666 mg kg-1) and low bioaccessible As percentage (<4.2%), indicating a low risk from exposure of resident children next to this area. The calculated dose of exposure indicated that, except for the pond tailings, in all other areas, the exposure route considering soil ingestion contributed at most to 9.7% of the maximum As allowed ingestion per day (0.3 lg kg-1BWday-1).


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published online 18 Dec 2011. Permanent restricted access to published version, due to publisher's copyright policy (Springer Netherlands).
Depositing User: epEditor USQ
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 24 Jul 2012 05:41
Last Modified: 20 Jul 2014 23:41
Uncontrolled Keywords: trace elements; in vitro tests; human health; anthropogenic impacts; environmental contamination
Fields of Research (FOR2008): 05 Environmental Sciences > 0503 Soil Sciences > 050304 Soil Chemistry (excl. Carbon Sequestration Science)
11 Medical and Health Sciences > 1117 Public Health and Health Services > 111705 Environmental and Occupational Health and Safety
10 Technology > 1004 Medical Biotechnology > 100402 Medical Biotechnology Diagnostics (incl. Biosensors)
Socio-Economic Objective (SEO2008): C Society > 92 Health > 9204 Public Health (excl. Specific Population Health) > 920405 Environmental Health
Identification Number or DOI: doi: 10.1007/s10653-011-9444-9
URI: http://eprints.usq.edu.au/id/eprint/21067

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