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 μg kg(-1) BW day(-1)).
journal_name
Environ Geochem Healthjournal_title
Environmental geochemistry and healthauthors
Ono FB,Guilherme LR,Penido ES,Carvalho GS,Hale B,Toujaguez R,Bundschuh Jdoi
10.1007/s10653-011-9444-9subject
Has Abstractpub_date
2012-08-01 00:00:00pages
457-65issue
4eissn
0269-4042issn
1573-2983journal_volume
34pub_type
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