Thallium associated with manganese ore tailings in a deactivated mine in the western region of Bahia, Brazil
Creators
- 1. Universidade Federal do Oeste da Bahia (UFOB), BA (Brazil)
- 2. Universidade Tecnológica Federal do Paraná (UTFPR), Medianeira, PR (Brazil)
- 3. Universidade Federal do Espírito Santo (UFES), Alegre, ES (Brazil)
- 4. Universidade Federal da Bahia (UFBA), Salvador, BA (Brazil)
Description
Thallium (Tl) is a rare metal with toxic effects notably harmful to human health and the environment. In this article, the natural occurrence of Tl was evaluated in a deactivated manganese mine located in the western region of Bahia, Brazil. The extraction procedure with aqua regia was used to dissolve the soil, sediment, and tailings samples. The Tl content was determined by differential pulse anodic stripping voltammetry (DPASV) and manganese (Mn) and iron (Fe) by flame atomic absorption spectroscopy (FAAS). The Tl levels ranged from 0.64 to 473 mg kg-1 , triggering an alert since most of the samples (soil and sediment) analyzed presented Tl concentrations above 1.0 mg kg-1, recognized as the maximum limit recommended by environmental agencies in North America and Europe. (author)
Additional details
Publishing Information
- Journal Title
- Journal of the Brazilian Chemical Society (Online)
- Journal Volume
- 32
- Journal Issue
- 5
- Journal Page Range
- p. 1120-1130
- ISSN
- 1678-4790
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 52076084
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- ABSORPTION SPECTROSCOPY; CHEMICAL ANALYSIS; CONTAMINATION; DEACTIVATION; IRON; MANGANESE ORES; MINES; NATURAL OCCURRENCE; SEDIMENTS; SOILS; TAILINGS; THALLIUM; VOLTAMETRY; X-RAY DIFFRACTION
- Descriptors DEC
- COHERENT SCATTERING; DIFFRACTION; ELEMENTS; METALS; ORES; SCATTERING; SOLID WASTES; SPECTROSCOPY; TRANSITION ELEMENTS; UNDERGROUND FACILITIES; WASTES