土壤重金属的迁移和分布特征在一个炼场
Chuxuan Li1, Mu Li1, Jiaqing Zeng1
1School of Metallurgy and Environment, Central South University, Changsha 410083, China.
Journal of environmental sciences (China)
|October 1, 2023
概括
炼场的重金属污染是普遍存在的. (Cd) 具有很高的流动性,深度迁移,并构成严重的环境风险,需要有针对性的整治.
科学领域:
- 环境科学 环境科学
- 地质化学 地质化学
- 土壤科学 土壤科学
背景情况:
- 炼场是重金属污染的重要来源.
- 了解金属化物分布和迁移对于环境管理和整治至关重要.
研究的目的:
- 调查重金属化物 (Pb, Zn, Cd, As) 在炼场地土壤中的空间分布和迁移特征.
- 评估污染的深度和流动性,以制定有效的补救策略.
主要方法:
- 从57个地点收集和分析了203个土壤样本.
- 评估重金属 (loid) 度,空间分布和分数组成.
- 计算迁移因子以确定相对流动性.
主要成果:
- 检测到Pb,Zn,Cd和As的严重污染.
- 污染地区覆盖了土壤的很大一部分 (Pb 99.5%,As 98.9%,Cd 85.3%,Zn 72.4%).
- Pb,Cd和As迁移到5米深;Cd表现出高流动性,特别是在更深层的土壤中.
结论:
- 在炼场的重金属 (化物) 污染是广泛和异质的.
- (Cd) 显示出最高的迁移潜力,其次是 Zn,Pb 和 As.
- 调查结果为风险评估和为受污染的炼场开发有针对性的整治计划提供了关键数据.
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