株洲市清水塘工业区地表水底泥重金属污染评价.pdf

第27卷第4期 四 川 环 境 V o1．27．No．4 2008年 8月 SICHUAN ENVIR0NMEN3’ August 2008 · 环境评价 · 株洲市清水塘工业区地表水底泥重金属污染评价 窦佩琼 ，候方东 ，包晓风 ，铸 华 ，张 耘 (1．株洲市环境保护研究院，湖南株洲 412000；2．中机国际工程设计院 江苏分院，南京 210001；3．株洲市环境监测中心站，湖南株洲 412000) 摘要：对株洲市清水塘工业区地表水底泥重金属含量进行了检测，并采用地积累指数法进行了评价。结果表明，该区底泥受 到重金属极强污染，各溪港污染程度为老霞湾港铜塘港霞湾港，各元素污染程度为CdHgPbAs；霞湾港由于底泥 量最大，其重金属含量最大，cd、Hg、Pb、As分别占总量的69．45％、80．62％、66．46％和86．56％；霞湾港中污水厂～河口 段重金属含量最大，Cd、|Ig、Pb、As分别占该港总量的98．50％、56．O6％、l8．14％和5209％。 关 键 词：地表水；底泥；重金属污染；地积累指数 中图分类号：X82 文献标识码：A 文章编号：1001—3644(2008)04-0074-05 Evaluation of Heavy Metals Pollution in Bottom Sediment of Surface Water in Qingshuitang District of Zhuzhou City DOU Pei—qiong ，HOU Fang—dong ，BA0 Xiao—feng ，QI Hua ，ZHANG Yun (1．Zhuzhou Environmental Protection Institute，Zhuzhou，Hunan 412000，China； 2．Jiangsu Branch of China Machinery International Engineedng Des~nResearch Institute，Nanjing 210001，China； 3．Zhuzhou Environment Monitoring Center，Zhuzhou，Hunan 412000，China) Abstract：The distribution of heavy metals including Cd，Pb，As and Hg in bottom sediment of surface water of Qingshuitang district was detected and evaluated by adopting the index of Geo—accumulation method．The result showed that the bottom sediment of Qingshuitang district was polluted seriously by heavy metals．The pollution degree distributed in different locations were as Old Xiawan harborTongtang harborXiawan harbor and the severity order of heavy metals were as CdHgPbAs．With the most bottom sediment，Xiawan harbor had the highest proportion of heavy metals．Actually the metals of Cd，Pb，As and Hg accounted for 69．45，80．62，66．46 and 86．56％ of the total sediment，respectively．As