摘要
[目的]了解重庆万盛孝子河水体重金属污染特征,评估风险。[方法]对万盛孝子河水体上、中、下游重金属含量进行分析,采用单因子指数法和内梅罗指数法对其重金属污染程度进行评价。[结果]孝子河河水中Hg的含量在0.5×10^(-4)~9.5×10^(-4)mg/L,Cr的含量在0.2×10^(-2)~4.5×10^(-2)mg/L。采样河段,Cr的单因子污染指数为1.96,属轻微污染,整条河流内梅罗指数为1.2,属于轻度污染。[结论]该研究可为今后重庆万盛孝子河水体污染治理提供理论依据。
[Objective] To understand the heavy metal pollution characteristics of Xiaozi River of Wansheng,Chongqing,and to evaluate the risk. [Method] The heavy metal content in Xiaozi River of Wansheng was analyzed. The single-factor index method and Nemerow index were adopted to evaluate the heavy metal pollution degree. [Result] The results showed that the contents of Hg and Cr were 0. 5 × 10^-4-9. 5 × 10^-4mg/L and 0. 2 × 10^-2-4. 5 × 10^-2mg/L. The single pollution index of Cr was 1. 96,indicating exceed the standard; Nemerow index was 1. 20,indicating light pollution. [Conclusion] The study can provide theoretical basis for future pollution control of Xiaozi River of Wansheng,Chongqing.
作者
史晓云
梁丽
张代荣
罗婧
SHI Xiao-yun LIANG Li ZHANG Dai-rong et al(Chongqing Wansheng Environmental Protection Agency, Chongqing 400800 College of Resources and Environment, Southwest University, Chongqing 400715)
出处
《安徽农业科学》
CAS
2017年第17期45-46,49,共3页
Journal of Anhui Agricultural Sciences
关键词
重金属
污染
风险评估
孝子河
Heavy metal
Pollution
Risk assessment
Xiaozi River
