对铜厂周围土壤污染影响因素的元分析
Mu Li1, Xue Li1, William Hartley2
1School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China.
Journal of environmental management
|October 30, 2024
概括
铜炼显著增加了土壤中的重金属化物 (HMs),特别是铜,和. 污染风险在非农用土地上较高,并且随着距离炼厂的距离而降低.
科学领域:
- 环境科学 环境科学
- 地质化学 地质化学
- 生态毒理学 生态毒理学
背景情况:
- 非铁炼,特别是铜 (Cu) 炼,是全球土壤重金属 (HM) 污染的主要来源.
- 现有的研究往往集中在单个炼场地,限制了对融对土壤HM污染的全球影响和贡献因素的理解.
- 需要进行全面的定量分析,以评估炼对土壤HM度和相关环境因素的影响的全球范围.
研究的目的:
- 为了对全球关于Cu炼场所周围土壤HM污染的研究进行元分析.
- 量化评估炼对土壤HM度的整体影响,与背景水平相比.
- 识别和分析影响HM分布和度的关键因素在Cu炼操作周围的土壤中.
主要方法:
- 从1993年到2023年,对189篇研究出版物进行了元分析.
- 使用元回归分析量化评估了土壤HM与全球范围内的各种影响因素之间的关系.
- 使用统计方法来确定HM与土地利用,距离,度和土壤特性等因素之间的相关性的重要性.
主要成果:
- 与背景值相比,炼显著增加了土壤总体HM度的315%.
- 铜 (1012%), (622%) 和 (315%) 的增幅最为明显.
- 非农业用地的HM度增加 (381%) 比农业用地的HM度增加 (203%) 更大. 随着距离炼厂的距离的增加,HM污染量减少,而随着度的增加,HM污染量增加.
结论:
- 炼是全球土壤重金属污染的重要贡献者,主要关注的是铜,和.
- 土地使用类型,距离来源的距离和度是影响Cu炼场所周围土壤HM污染程度的关键因素.
- 研究结果为全球受污染地点的风险评估,管理和修复策略提供了宝贵的见解.
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