小海高位池沉积物中重金属分布与污染评价  

Distribution and Pollution Assessments of Heavy Metals in Sediments from High-level Breeding Pond Zone,Xiaohai Bay,Hainan

作　　者：齐书蕾[1] 祁士华[1] 傅杨荣[2] 谭凌智[1] 张家泉[1] 兰兰[1] 张婉珈[1] 

机构地区：[1]中国地质大学生物地质与环境地质教育部重点实验室,湖北武汉430074 [2]海南省地质调查院,海南海口570206

出　　处：《环境科学与技术》2010年第8期84-87,共4页Environmental Science & Technology

基　　金：海南省"海南岛生态地球化学调查"项目(200414200010)

摘　　要：通过分析8个小海高位池养殖区的采样点沉积物中7个典型重金属污染物的含量,采用单因子指数法和Hakanson生态风险指数法,定量确定养殖池沉积物中重金属的污染程度和潜在生态风险程度。结果表明,沉积物中主要的重金属污染因子是Cu、Pb,污染指数分别为1.14和1.08;其重金属影响因子的顺序为Cu>Pb>Cd>Hg>Zn>Cr>As,属于轻度污染;主要潜在生态风险因子为Cd,各种重金属的潜在生态危害系数大小顺序为Cd>Hg>Cu>Pb>As>Cr>Zn,潜在生态风险指数RI平均值为41.12,属于低潜在生态风险。According to analysis of the contents of the typical heavy metals pollutants in the sediments of 8 samples that collected from high-level breeding pond zone,the single factor index method and Hakanson ecological risk were used to quantitatively determine the extent of pollution and the potential ecological risks of heavy metal in the sediments of high-level breeding pond zone.Result showed that the main factor of the heavy metal pollution were Cu and Pb whose pollution indexes are 1.14 and 1.08 respectively.The sequence of factor index is Cu>Pb>Cd>Hg>Zn>Cr>As.The environment of the zone is assessed as slight pollution according to the single factor index method.The major factor of potential ecological risk is Cd.The order of the potential ecological risk is Cd>Hg>Cu>Pb>As>Cr>Zn,and average potential ecological risk is 41.12.Therefore,high-level breeding pond zone is evaluated as slight potential ecological risk.

关 键 词：重金属 沉积物 污染评价 高位池 

分 类 号：X132[环境科学与工程—环境科学]