湖南三十六湾甘溪河重金属污染特征及环境风险评估
The Heavy Metals Pollution Characteristics and Environment Risk Assessment of Ganxi River, Sanshiliuwan, Hunan Province
郭婧琳 1邱波 1刘耀驰 1杨兆光1
作者信息
- 1. 中南大学化学化工学院环境与水资源研究中心,湖南长沙410083
- 折叠
摘要
[目的]调查分析湖南三十六湾地区主要河流甘溪河水体及沉积物中重金属污染情况,旨在为治理矿区河流重金属污染提供依据.[方法]以湖南典型有色金属采选工业区三十六湾为研究对象,选取了甘溪河流域的8个典型断面收集水样及底泥沉积物样品,采用ICP-OES测定甘溪河水体及周围沉积物中重金属含量,并采用潜在生态危害指数法对重金属污染进行环境风险评估.[结果]三十六湾地区甘溪河重金属污染程度由强至弱依次为Zn、As、Pb、Cu、Cr(Cd);底泥沉积物中重金属生态风险由强到弱依次为Cd、As、Pb、Cu、Zn、Cr;各采样点断面重金属污染程度从大到小依次为甘溪村、三合乡、杨家田、芹菜村、沙子岭、新桥头、两江口、李家坪.[结论]三十六湾甘溪河重金属污染严重,急需采取综合措施进行治理.
Abstract
[Objective] The aim was to investigate heavy metal pollution in water and sediments of Ganxi River in Sanshiliuwan Region in Hunan Province,and provide basic reference for heavy metal pollution control in mining area river.[Method] With Sanshiliuwan in Hunan Province as research object,water and sediment samples were collected from 8 typical sections in Ganxi River basin,ICP-OES was adopted to determine heavy metal content,and potential ecological risk index method was adopted to conduct environment risk assessment.[Result] The order of heavy metal pollution degree in Ganxi River was Zn ＞ As ＞ Pb ＞ Cu ＞ Cr(=Cd);the order of heavy metal ecological risk in sediments was Cd ＞ As ＞ Pb ＞ Cu ＞ Zn ＞ Cr;the order of heavy metal pollution degree in each sampling site section was Ganxi Village ＞ Sange Township ＞ Yangjiatian ＞ Qinjia Village ＞ Shaziling ＞ Xinqiaotou ＞ Liangjiakou ＞ Lijiaping.[Conclusion] Heavy metal pollution in Ganxi River in Sanshiliuwan is serious,comprehensive countermeasures should be adopted.
关键词
重金属污染/甘溪河/潜在生态危害指数法/风险评估Key words
Heavy metals pollution/Ganxi River/Potential ecological risk index/Risk assessment引用本文复制引用
基金项目
环保公益性行业科研专项(201309052)
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据