某铜矿区土壤重金属污染评价.docx

doi：10.3969/j.issn.1007-7545.2018.08.018 某铜矿区土壤重金属污染评价 张永康 1,2，曹耀华 1,2，高照国 1,2，刘承勇 3，冯乃琦 1,2 ，闫小换 1,2 （ 1.中国地质科学院 郑州矿产综合利用研究所，郑州 450006； 2.国土资源部多金属矿评价与综合利用重点实验室，郑州 450006； 3.河南省地质矿产勘查开发局 第二地质环境调查院，郑州 450000） 摘要 ：分析测试了青海某铜矿区土壤重金属元素 (As、Cd 、Hg、Pb、Cu、Zn、Cr、Ni) 含量，研究了对照区土壤 似背景值，采用单因子指数法、内梅罗综合污染指数法、地累积污染指数法评价了矿业活动区土壤重金属污染 状况。结果表明，除废石堆场周边区域极个别的土壤样品 As 、Pb、 Cu、 Cd 元素超标外，矿业活动区土壤环境 质量良好；对照区土壤似背景值与青海省土壤元素背景值相当，不是重金属高背景区。 关键词： 矿业活动区；重金属污染；土壤似背景值 中图分类号： X825 文献标志码： A 文章编号： 1007-7545（ 2018） 08-0000-00 Assessment of Heavy Metal Pollution in One Copper Mining Area ZHANG Yong-kang 1,2, CAO Yao-hua 1,2, GAO Zhao-guo 1,2, LIU Cheng-yong 3, FENG Nai-qi 1,2, YAN Xiao-huan 1,2 (1. Zhengzhou Institute of Multipurpose Utilization of Mineral Resources CAGS, Zhengzhou 450006, China; Key Laboratory of Evaluation and Multipurpose Utilization of Polymetallic Ores, Ministry of Land and Resources, Zhengzhou 450006, China; 3. No.2 Institute of Geo-environment Survey of Henan, Zhengzhou 450000, China) Abstract ： Contents of heavy metal elements (As, Cd, Hg, Pb, Cu, Zn, Cr, Ni) in soil samples from one copper mining activity area in Qinghai Province were analyzed and measured. Background-like values of the soil in control area were studied. Contents of heavy metal elements were evaluated based on Single Factor Index Method, Nemerow Multi- Factor Index Method and Muller ’Geos-Accumulation Pollution Index Method. The results show that the soil quality in mining activity area is good except that contents of As, Pb, Cu, and Cd elements in a small amount of samples from areas around waste rock yard are higher than the secondary standard of GB15618-1995. Background-like values of soil in control area are similar to those of soil elements in Qinghai Province, proving a non-heavy metal high-background area. Key words ： mining activity area; heavy metal pollution; background-like value of soil 土壤是人类的衣食之源和生存之本，是最基本的生产要素 [1] ，土壤环境污染防治是目前研究的热点 [2-3] 。土 壤中的重金属通过自然风化、扬尘、降雨淋溶等方式进一步扩散到周边水体和土壤中，严重影响区域土壤的质 量，进而通过食物链