Related Experiment Video
Updated: May 26, 2026

Removal of Trace Elements by Cupric Oxide Nanoparticles from Uranium In Situ Recovery Bleed Water and Its Effect on Cell Viability
Published on: June 21, 2015
Arsenic bioaccessibility in a gold mining area: a health risk assessment for children
Fábio Benedito Ono1, Luiz Roberto Guimarães Guilherme, Evanise Silva Penido
1Department of Soil Science, Federal University of Lavras, CP 3037, Campus UFLA, Lavras, MG 37200-000, Brazil. onofabiob@gmail.com
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)).
Related Concept Videos
Acid Mine Drainage
Microbial Leaching
Types of Toxins
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
Toxicity Testing in Animals
The Periodic Table and Organismal Elements
Periodic Table Provides Information...
The Periodic Table and Organismal Elements

