城市尾水外排长江口的氧化还原环境监测及其对重金属Hg,Cr形态的影响分析  

Monitoring of the redox environment caused by city tail water discharged into Changjiang Estuary and effect on it forms of Hg,Cr

作　　者：李金霞[1] 陆维昌[1] 韩庆平[1] 陈邦林[1] 

机构地区：[1]华东师范大学水环境与界面科学研究中心,上海200062

出　　处：《海洋环境科学》2006年第A01期40-43,共4页Marine Environmental Science

基　　金：上海市建设技术发展基金会项目(A0006122-1)

摘　　要：2001-2002年对上海城市尾水排放对周边水域的影响进行研究,测量了竹园、白龙港尾水排放口水体的氧化还原电位(Eh),并分析了它对重金属形态及其毒性的影响。结果表明,目前上海市城市尾水水下排放并未改变长江口大水体的氧化还原环境,基本以氧化环境为主。重金属元素Hg、Cr主要以Hg(Ⅱ)、Cr(Ⅲ)形态存在,尾水外排不会使Cr毒性增加。The influence on surrounding water of shanghai tail water discharged into Changjiang Estuary and measurement of the redox potential （Eh） in Zhuyuan and Bailonggang water, were studied. The effect of redox environment on valence of heavy metals was also studied. The results showed that the tail water did not alter the redox environment of Chang, jiang estuary, which belongs to oxidation environment. The heavy metals Hg, Cr existed in Hg（ Ⅱ ）, Cr（ Ⅲ ）. The discharge did not increase the toxicity of Cr.

关 键 词：氧化还原环境 重金属 长江口 尾水排放 

分 类 号：X55[环境科学与工程—环境工程] X83