天津市七里海滨海湿地沉积物重金属元素的空间分布特征  

Patterns of Spatial Distribution of Heavy Metals in the Sediments of Qilihai-wetland in Tianjin

作　　者：乔吉果[1,2] 龙江平[3] 詹华明[1,2] 宫少军[1,2] 赵卫[1,2] 唐博[3] 江胜国[1,2] 

机构地区：[1]天津市海洋地质勘查中心,天津300170 [2]天津华北地质勘查局地质研究所,天津300170 [3]国家海洋局第二海洋研究所,浙江杭州310013

出　　处：《湿地科学与管理》2013年第4期46-50,共5页Wetland Science & Management

基　　金：天津市海岸带灾害地质风险评估研究;天津市海岸带灾害地质预报技术(KJXH2011-18);天津市滨海湿地生态系统地质综合调查监测技术方法集成;我国大河三角洲的脆弱性调查及灾害评估技术研究(200805063-3);天津市七里海湿地典型植物元素特征及其修复研究项目(国土房任[2013]5号)

摘　　要：对七里海滨海湿地沉积物6种重金属元素进行系统分析,结果表明Cu、Zn、Pb、As、Cd 5种元素在沉积物中含量相对稳定,Hg元素在湿地沉积物中分布不均匀,变化较大。富集度分析表明,七里海滨海湿地重金属富集度划分为元素适中、轻度富集、中度富集3个级别,元素富集程度依次为Cd>Cu>Zn>Pb>Hg>As,As元素基本介于元素适中和元素贫乏之间,Cu、Zn、Pb、Hg 4种重金属达到了轻度富集,说明该区已受到轻度污染,Cd元素已到达中度富集,说明该区已受到中度污染,应引起重视。The paper analyses 6 kinds of heavy metal elements in surface sediment of Qilihai-wetland, results showed：the contents of Cu, Zn, Pb, As, Cd were relatively stable, Hg was unevenly distributed. The richness of heavy metals in the wetland was divided into normal, slightly high and moderately high, the order of richness was Cd＆gt;Cu＆gt;Zn＆gt;Pb＆gt;Hg＆gt;As. As was between the normal and poor. Cu, Zn, Pb, Hg were slightly high, indicating a slight pollution in the wetland. Cd was moderate high, indicating a moderate pollution.

关 键 词：重金属元素 相关性 富集度 天津市七里海 

分 类 号：X830.2[环境科学与工程—环境工程]