南四湖表层底泥重金属空间分布及污染程度评价 Spatial distribution and pollution assessment of heavy metals in surface sediments of Nansihu Lake.pdfVIP
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南四湖表层底泥重金属空间分布及污染程度评价 Spatial distribution and pollution assessment of heavy metals in surface sediments of Nansihu Lake
第28卷第4期 水资源保护 2012年7月 V01.28No.4 WAl[ERRESOIJRCES PRoIECⅡ0N Jul.2012 DOI:10.3969/j.issn.1004—6933.2012.04.002 南四湖表层底泥重金属空问分布及污染程度评价 李 爽,张祖陆 (山东师范大学人口·资源与环境学院,山东济南250014) 到南四湖湖区重金属污染的空间分布特征。结合地质积累指数法和潜在生态风险指数法,对南四 湖重金属污染程度进行评价。结果表明,南四湖已受到重金属元素的污染,属于中等程度污染湖 泊,其中以As、H卧cd、Pb元素污染严重。除了As、cd元素在下级湖表层底泥中的质量比略高外, 其他重金属元素在上级湖的污染程度普遍比在下级湖的高;二级坝以北的昭阳湖湖区潜在生态危 害最为严重,其次是南阳湖、微山湖、独山湖和二级坝以南的昭阳湖湖区。 关键词:南四湖;表层底泥;重金属污染;空间分布;地质积累指数法;潜在生态风险指数法 中图分类号:X502 文献标识码:A 文章编号:1004—6933(2012)04一0006—06 distributionand assessmentof metalsin Spatial pollution heavy surfacesedimentsofNansihuLake LI Zu-lu Shuang,ZHANG and Normal (CollegeofPopulation,ResourcesEnvironment,ShandongUnive瑚ity,Jinan250014,China) Abstract:Thecontentsof isa heavy Zn,andAs,whichmetalloid, metals,includingHg,Cd,Cr,Pb,Ni,Cu,and in29 ofsurfacesedimentsinNansihuLakewere distributioncharacteristicsof the samples investigated.Thespatial heavy metalswere indexof risk obtained.The and indexmethodswereusedtoassessthe geo—accumulationpotentialecological metal inNansihuLake.Theresultsshowthatthelakehasbeen metals.As. heavy pollution moderatelypollutedbyheavy havecaused Pb serious in出elake.Themetal inthelakestothenorthofa Hg,Cd
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