海口城市地表水体重金属的空间分布特征及环境质量评估  

Distribution and evaluation of heavy metal in surface water in Haikou City

作　　者：傅杨荣[1] 郭跃品[1] 马荣林[1] 董志诚[2] 

机构地区：[1]海南省地质调查院,海口570206 [2]鲁东大学,烟台264025

出　　处：《生态科学》2016年第1期154-160,共7页Ecological Science

基　　金：中国地质调查局多目标生态地球化学调查项目(1212010511215);海南省科学技术厅海南岛生态环境地质调查评价成果集成与技术研发及应用研究项目(ZDXM2014092)资助

摘　　要：城市地表水中重金属污染备受关注。通过研究海口市地表水体6种重金属(Cd、Cu、Ni、Pb、Zn和As)的空间分布特征,并采用中国水体环境质量标准对水体环境质量进行评估。结果表明,海口城市地表水体中重金属平均含量分别为Cu 7.4μg·L^(–1)、Pb 0.1μg·L^(–1)、Zn 15μg·L^(–1)、Cd 0.52μg·L^(–1)、As 2.6μg·L^(–1)和Ni 7.0μg·L^(–1)。海口市地表水体重金属As、Cu、Ni的含量受水体p H、温度和电导率的影响。从空间分布来看,海口市区水体中Cu、Ni元素含量明显低于周边水体,其他重金属空间分布无明显规律。从水体质量评估结果来看,海口城市地表水体重金属含量均符合中国水质标准(GB 3838-2002)I类水质的限值规定。Heavy metal pollution in surface water of city has been of great concern. The distribution of heavy metal（Cd, Cu, Ni, Pb, Zn, and As） in surface water in Haikou City and the water quality was evaluated. The results showed that average concentrations of heavy metals in surface water were 7.4 μg·L^（–1） for Cu, 0.1 μg·L^（–1） for Pb, 15 μg·L^（–1） for Zn, 0.52 μg·L^（–1） for Cd, 2.6 μg·L^（–1） for As, and 7.0 μg·L^（–1） for Ni. Concentrations of As, Cu and Ni in surface water in Haikou City were influenced by p H, temperature and conductivity. Levels of Cu and Ni in urban surface water were lower than those in outskirts waters, however, no obvious spatial distribution of other metals in waters of Haikou City was found. The evaluation results indicated heavy metal concentrations in surface water of Haikou City were lower than the limited values of Class I in water quality standard（GB 3838-2002）.

关 键 词：海口市 地表水 重金属 环境质量 评估 

分 类 号：X82[环境科学与工程—环境工程]