Thallium Associated with Manganese Ore Tailings in a Deactivated Mine in the Western Region of Bahia, Brazil
| Autor: | Jorge Luís O. Santos, Giuliana M. G. Bueno, Éder Lisandro de Moraes Flores, Luís Gomes Carvalho, Oldair Donizete Leite, Ana Maria Pinto dos Santos, Clayton R. Janoni |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
environmental contamination
mineral Extraction (chemistry) chemistry.chemical_element Sediment General Chemistry Manganese Tailings law.invention soil chemistry.chemical_compound Anodic stripping voltammetry chemistry law Environmental chemistry Thallium Environmental science Aqua regia Atomic absorption spectroscopy heavy metals mining-tailing |
| Zdroj: | Journal of the Brazilian Chemical Society v.32 n.5 2021 Journal of the Brazilian Chemical Society Sociedade Brasileira de Química (SBQ) instacron:SBQ |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|