渤海南部表层沉积物重金属污染及潜在生态风险评价  

Pollution and risk assessment of heavy metals in surface sediment of south Bohai

作　　者：张栋[1] 郑晓玲[1] 何鹰[1] 郭军辉[1,2] 

机构地区：[1]国家海洋局第一海洋研究所海洋生态研究中心,山东青岛266061 [2]上海海洋大学水产与生命学院,上海201306

出　　处：《环境污染与防治》2011年第9期8-10,24,共4页Environmental Pollution & Control

基　　金：国家"863计划"项目(No.2008AA09Z116)

摘　　要：利用电感耦合等离子体/质谱仪(ICP/MS)测定了渤海南部21个站位表层沉积物中Cr、Cu、Zn、Cd和Pb共5种重金属浓度,比较分析了重金属来源及分布特征,同时应用Hakanson潜在生态危害指数法进行潜在生态风险评价。结果表明,调查区域沉积物中Cr、Cu、Zn、Cd、Pb的平均质量浓度分别为43.67、17.27、61.65、0.66、25.32 mg/kg;5种重金属元素单因子潜在生态风险系数为Cd>Pb>Cu>Cr>Zn,为轻微生态危害;各站位重金属综合潜在生态风险指数均小于150,为轻微生态危害,其克里格插值等值线分布显示渤海湾是调查区域生态风险最高区域。The contents of 5 heavy metals（Cr,Cu,Zn,Cd and Pb） in surface sediment of 21 sampling sites were detected by ICP/MS to analyze the origin and distribution profile of heavy metal in south of Bohai.The Hakanson method was applied to assessment the potential ecological risk in this area.The results showed that the concentration of Cr,Cu,Zn,Cd and Pb were 43.67,17.27,61.65,0.66 and 25.32 mg/kg respectively.The single-factor potential ecological risk of heavy metals in surface sediment was in a lower pollution degree,and they were in order of CdPbCuCrZn.The composite risk assessment index was lower than 150,belonging to low level condition,and the isoline map of the potential ecological risk index showed that the Bay of Bohai belonged to higher ecological risk compared to the other areas.

关 键 词：渤海南部 表层沉积物 重金属 潜在生态风险评价 

分 类 号：X55[环境科学与工程—环境工程] X820.4