在南非金矿区内大量采样和重金属的来源分配,南非金矿区
Nomsa Duduzile Lina Thabethe1,2, Tafadzwa Norman Makonese3, Masilu Daniel Masekameni4
1Department of Environmental Sciences, University of South Africa, 28 Pioneer Street, Florida, 1709, South Africa. ethabend@unisa.ac.za.
Environmental monitoring and assessment
|October 24, 2025
概括
这项研究发现,埃万德和埃姆巴伦勒矿区周围的土壤中重金属度较高,特别是黄金,,和. 尾矿储存设施对这种土壤污染有很大影响,影响周围环境.
科学领域:
- 环境科学 环境科学
- 地质化学 地质化学
- 分析化学 分析化学
背景情况:
- 土壤中的重金属来源于自然和人为来源,包括采矿,工业和农业.
- 常见的土壤污染物包括 (Pb), (Hg), (Cd), (Mn), (Ni), (Zn) 和 (As).
- 土壤受到重金属污染对环境和人类健康构成风险.
研究的目的:
- 为了确定埃万德和eMbalenhle采矿区内土壤中的重金属度.
- 确定研究土壤中重金属污染的来源.
- 评估废弃物储存设施 (TSF) 对土壤重金属含量的影响.
主要方法:
- 从采矿区和住宅区收集了十个表层土壤样本 (深度0-15厘米).
- 使用感应合等离子体质谱 (ICP-MS) 分析重金属度.
- 应用绝对主要组件得分-多重线性回归 (APCS-MLR),富化因子 (EF) 和污染因子 (CF) 来确定来源和贡献.
主要成果:
- 在TSF中发现的 (Cr), (As), (Pb), (U) 和黄金 (Au) 的平均度高于住宅场所.
- (Mn) 度在住宅区和TSF之间显示出显著的差异.
- 据APCS-MLR分析显示,TSF中的Au (92.7%),As (93.3%),U (93.3%) 和Cr (88.3%) 主要来自采矿活动.
结论:
- 尾矿储存设施是研究矿区重金属污染的重要来源.
- 采矿活动是几个主要重金属的主要来源,包括Au,As,U和Cr.
- 这项研究强调了TSF对环境的影响,并为未来的土壤污染评估推了综合方法.
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