期刊论文

Pollution Characteristics and Ecological Risk Assessment of Heavy Metals in Sediments of the Qingshuitang Industrial District

中文

地球与环境

1672-9250

2019

47

5

671-679

10.14050/j.cnki.1672-9250.2019.47.113

湖南省自然科学基金资助项目(2018JJ2182)。

本校为第一机构

为查明株洲清水塘工业区池塘底泥重金属污染现状及其变化趋势,揭示池塘底泥重金属对霞湾港与老霞湾港水体及底泥的潜在影响。将区域内25口池塘分别划属S1、S2、S3区,于2017年12月11日在25口池塘采集32份底泥样品,并进行了Pb、Cd、As含量的测定,采用地累积指数(I_(geo))与Hakanson潜在生态危害指数(E_r~i)对底泥中Cd、Pb、As污染与生态风险进行了评价。结果表明:S1、S2、S3区池塘底泥中Cd、Pb、As含量均超过湖南土壤背景值,分别为土壤背景值的657、44、12倍,表明Cd是清水塘工业区池塘底泥中的主要污染物。变异系数结果显示,各采样点底泥中Cd、Pb、As含量分布离散,受点源输入影响大。底泥中Pb、Cd...

In order to assess the heavy metal pollution in pond sediments of Xiawan and Laoxiawan ports in the Qingshuitang industrial zone of Zhuzhou, 25 ponds in the study area were divided into three sub-divisions (S1, S2 and S3) and a total of 32 sediment samples were collected on December 11th, 2017, and contents of pH, Pb, Cd and As in sediment samples were measured. The geo-accumulation index (I_(geo)) and the potential ecological risk index (E_r~i) were used to evaluate the pollution and ecological risk of Cd, Pb and As. The results showed that contents of Cd, Pb and As in sediments of S1, S2 and...