瓯江口海域表层沉积物重金属污染及潜在生态风险评价  

POLLUTION AND POTENTIAL ECOLOGICAL RISK EVALUATION OF HEAVY METALS IN THE SURFACE SEDIMENTS FROM THE OUJIANG RIVER ESTUARY

作　　者：郜钧璋[1] 张树刚[1] 邱进坤[1] 陈锋[1] 

机构地区：[1]国家海洋局温州海洋环境监测中心站,浙江温州325013

出　　处：《海洋湖沼通报》2011年第4期158-163,共6页Transactions of Oceanology and Limnology

基　　金：国家海洋局海洋赤潮灾害立体监测技术与应用重点实验室开放基金(200910)资助

摘　　要：分析了瓯江口海域采集的15个表层沉积物样品重金属(Cu、Pb、Zn、Cd、Hg、As)的含量分布特征,并对其环境质量进行了评价,结果表明:重金属高值区主要分布在瓯江入海口灵昆岛两侧海域;用单因子评价法以第一类沉积物质量标准评价显示,该海域受重金属污染程度较轻,主要受到As和Cu的轻微污染;采用潜在生态风险指数法对该海域表层沉积物重金属污染的潜在生态风险进行了评价,该海域重金属的潜在生态危害系数大小顺序为Hg>As>Cd>Cu>Pb>Zn,沉积物对水域具有低潜在生态风险。A preliminary study on six kinds of heavy metals including Cu,Pb,Zn,Cd,Hg,and As of 15 samples were conducted and the environment quality was evaluated in the Oujiang River estuary.The results showed that high contents of heavy metals distributed in the area around Lingkun Island.The area was not evidently polluted by heavy metals except for light contaminated of As and Cu with the first class sediment quality standard.The potential ecological risk of heavy metals in the surface sediments was evaluated which showed that potential ecological risk of heavy metals followed the order of Hg AsCdCuPbZn.The surface sediments possessed rather light potential ecological risk.

关 键 词：瓯江口 表层沉积物 重金属 潜在生态风险评价 

分 类 号：X55[环境科学与工程—环境工程]