云南中甸县Cu矿区土壤重金属污染评价  

Characterization Evaluation of Heavy Metal Pollution in the Soils of Cu Mining Areas of Zhongdian County in Yunnan Province

作　　者：李春华[1] 王玥琳[2] 陈文德[1] 

机构地区：[1]成都理工大学旅游与城乡规划学院,四川成都610059 [2]西南林业大学生态旅游学院,云南昆明650224

出　　处：《环境保护科学》2016年第2期97-102,共6页Environmental Protection Science

基　　金：西南三江成矿带中南段斑岩型铜矿遥感找矿模型研究与靶区优选(12120113095400);成都理工大学骨干教师支持计划化项目(2013QN08)基金资助

摘　　要：通过对矿区土壤中重金属元素Cd、Cr、Cu、Pb、Zn、As、Hg含量的测定,运用单项污染指数法、内梅罗综合污染指数法评价了其污染现状。对位于云南中甸县雪鸡坪、春都矿区土壤重金属污染状况进行了调查研究。结果表明：矿区土壤中重金属元素污染程度有差异,从单向污染指数来看Cd、Cr、Cu、Hg、Zn等重金属元素污染水平为清洁。As单项污染指数变化范围为0.49~0.72,污染等级为警戒级。春都矿区中Pb的污染程度较严重,其单项污染指数大于1,已达到轻度污染水平;从内梅罗污染指数来看：春都矿区（p_n=1.12）〉雪鸡坪矿区（p_n=0.49）,春都矿区土壤开始受到轻度污染,雪鸡坪矿区土壤为安全状态。In this paper, on the basis of determination of the contents of heavy metals in the soils of mining areas such as Cd, Cr, Cu, Pb, Zn, As and Hg, the pollution status was evaluated by use of single-factor pollution index and Nemero pollution index. The status of heavy metal pollution in the soils of Xuejiping and Chundu mining areas of Zhongdian County in Yunnan Province were investigated. The results showed that the pollution levels of heavy metal elements in soils were different. By use of single- factor index, it was found that the pollution levels of such heavy metal elements as Cd, Cr, Cu, Hg and Zn were low. The single pollution index of As was ranged from 0.49 to 0.72, indicating that the contamination level reached to the alert. Pb Pollution in Chundu mining area was serious, with single-factor pollution index over 1, demonstrating that the soil was slightly polluted. By use of Nemero pollution index, the pollution degree of Chundu mining area （pn=1.12） was higher than that of Xuejiping mining area（pn=0.49）. Therefore, it was concluded that the pollution level of heavy metals in Xuejiping mining area was in a safe state, while that in Chundu mining area was in a slight polluted state.

关 键 词：重金属污染 内梅罗污染指数 云南中甸 

分 类 号：X53[环境科学与工程—环境工程]