淮南市十涧湖中汞污染现状研究  

Research on Mercury Pollution Status in Shijian Lake of Huainan City

作　　者：肖永红[1] 高良敏[1] 刘玉玲[1] 文辉[1] 张存良[1] 开小莉[1] 何灿[1] 

机构地区：[1]安徽理工大学地球与环境学院,安徽淮南232001

出　　处：《安徽农业科学》2010年第1期472-474,共3页Journal of Anhui Agricultural Sciences

基　　金："中国环境健康"中美国际合作项目(486-A-00-06-00014-00)

摘　　要：为了解十涧湖中汞的污染状况,分别对冬夏两季水体中不同形态汞的含量及底泥中总汞含量进行测定,分析了水体中不同形态汞的季节变化,进行了水体中汞污染的单因子评价及底泥中汞的潜在生态风险评价,结果表明,夏季,颗粒态汞是水体中汞的主要存在形态,占总汞的56.9%;冬季,溶解态汞是水体中汞的主要存在形态,占总汞的59.82%;夏季,除水中颗粒态汞比冬季有所增加外,总汞、溶解态汞及活性汞的浓度均比冬季有所降低;冬夏两季水体中汞的污染指数Ii分别为0.921、0.765,均是潜在危害元素,但冬季水体中汞接近已造成危害的元素;底泥中汞的生态危害系数Eir=11.76<40,危害等级为Ⅰ级,属于轻微的生态危害。In order to know the mercury pollution status of Shijian Lake, different form mercury contents in water and total content in sediment in winter and summer were determined respectively. The seasonal variation of different forms mercury in water was analyzed, and single - factor evaluation of mercury pollution in water and potential ecological risk index of mercury in sediment were carried out. The results showed that in summer, particulate mercury is the main form of mercury in water, accounted for 56.90% ; in winter, soluble mercury is the main form of mercury in water, accounted for 59.82% ; in addition to particulate mercury increased in summer water, concentration of total mercury, soluble mercury and active mercury were all lower than that of in winter; mercury pollution indexes in winter and summer were 0. 921,0. 765 respectively, which were both potential hazardous elements, but mercury in winter water was close to the elements that have caused harm ; eco- logical risk index of mercury in sediment was 11.76, damage grade is first, belonging to minor ecological hazard.

关 键 词：十涧湖 水体 表层沉积物 汞 季节变化 评价 

分 类 号：X524[环境科学与工程—环境工程]