Thallium Associated with Manganese Ore Tailings in a Deactivated Mine in the Western Region of Bahia, Brazil

被引：3
|
作者：
Santos, Jorge Luis O. [1 ]
Bueno, Giuliana M. G. [2 ]
Flores, Eder L. M. [3 ]
Leite, Oldair D. [3 ]
Janoni, Clayton R. [4 ]
Carvalho, Luis G. [5 ]
dos Santos, Ana Maria P. [6 ]
机构：
[1] Univ Fed Oeste Bahia, Ctr Multidisciplinar Bom Jesus da Lapa, BR-47600000 Bom Jesus Da Lapa, BA, Brazil
[2] Univ Fed Oeste Bahia, Programa Posgrad Ciencias Ambientais, BR-47808021 Barreiras, BA, Brazil
[3] Univ Tecnol Fed Parana, Dept Quim, BR-85884000 Medianeira, PR, Brazil
[4] Univ Fed Espirito Santo, Dept Geol, BR-29500000 Alegre, ES, Brazil
[5] Univ Fed Oeste Bahia, Ctr Ciencias Exatas & Tecnol, BR-47808021 Barreiras, BA, Brazil
[6] Univ Fed Bahia, Inst Quim, BR-40170115 Salvador, BA, Brazil
来源：
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY | 2021年 / 32卷 / 05期
关键词：
environmental contamination; heavy metals; mineral; soil; mining-tailing; POLLUTION CHARACTERISTICS; HEAVY-METALS; HEALTH-RISK; SOIL; SEDIMENTS; CONTAMINATION; SPECIATION; ELEMENTS; WATERS; CHINA;
D O I：
10.21577/0103-5053.20210014
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
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.
引用
收藏
页码：1120 / 1130
页数：11
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