胶州湾潮间带表层沉积物重金属污染评价  

Evaluation of heavy metals pollution in surface sediments of the intertidal Jiaozhou Bay,China

作　　者：刘兆庆 徐方建[1,2,3] 田旭 徐丰 赵永芳[3] 李安春[3] 江祖州 殷学博[3] XU Fang-jian;TIAN Xu;LIU Zhao-qing;XU Feng;ZHAO Yong-fang;LI An-chun;JIANG Zu-zhou;YIN Xue-bo(School of Geosciences, China University of Petroleum, Qingdao 266580, China;Evaluation and Detection Technology Laboratory of marine mineral resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China;Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071,China;National Deep See Center, Qingdao 266237, China)

机构地区：[1]中国石油大学(华东)地球科学与技术学院,山东青岛266580 [2]青岛海洋科学与技术国家实验室-海洋矿产资源评价与探测技术功能实验室,山东青岛266071 [3]中国科学院海洋研究所,海洋地质与环境重点实验室,山东青岛266071 [4]国家深海基地管理中心,山东青岛266237

出　　处：《中国环境科学》2017年第6期2239-2247,共9页China Environmental Science

基　　金：国家自然科学基金资助项目(41430965);山东省自然科学基金资助项目(ZR2016DM08);中国科学院海洋地质与环境重点实验室开放基金资助项目(MGE2016KG08);青岛市基础研究计划项目(13-1-4-197-jch)

摘　　要：采集了胶州湾潮间带29个表层沉积物样品,采用电感耦合等离子质谱法(ICP-MS)分析了沉积物中重金属元素Cu、Pb、Zn、Cr、Cd、As的含量,讨论了其分布特征、主要来源及污染程度.结果表明:Cu、Pb、Zn、Cr、Cd和As的平均含量分别为38.8、55.2、107.4、69.9、0.44、9.2mg/kg;污染指数(CF)依次为Cd>Pb>Zn>As>Cu>Cr,研究区东北部的污染较为严重;污染负荷指数(PLI)反映出72.4%的站位存在污染,区域污染负荷指数(PL_(Izone))表明潮间带总体污染程度为中等污染;潜在生态危害指数(Eri)依次为Cd>Pb>Cu>As>Zn>Cr.综合潜在生态危害指数(RI)显示51.7%的站位属于低生态危害,24.1%的站位属于中等生态危害,17.2%的站位属于较高生态危害,7.0%的站位属于很高生态危害,其中Cd是首要的潜在生态风险因子.交通、农业和工业污染是研究区重金属的主要来源,建议加强对污染物来源的控制,同时对污染严重区域(特别是东北部)进行人工调控.The current study investigated the pollution characteristics of heavy metals(Cu,Pb,Zn,Cr,Cd,As)insediments of the intertidal Jiaozhou Bay using29surface sediments by Inductively Coupled Plasma Mass Spectrometry(ICP-MS),and discussed the distribution,the source and the pollution extent of heavy metals.The results showed that theaverage concentrations of Cu,Pb,Zn,Cr,Cd,and As were38.8,55.2,107.4,69.9,0.44,and9.2mg/kg,respectively.Thelevel of contamination factor(CF)followed the order:Cd>Pb>Zn>As>Cu>Cr,and the northeast of the studied area wereseriously polluted by heavy metals.Pollution load index(PLI)indicated that72.4%of the stations were polluted,and theregional pollution load index(PLIzone)reflected that the intertidal zone was moderate pollution.The monomial potentialecological risk index(Eri)were in the following order:Cd>Pb>Cu>As>Zn>Cr.The potential ecological risk index(RI)revealed that the ecological risk at low,moderate,high,and very high level were51.7%,24.1%,17.2%,and7.0%,respectively,and the Cd was the primary potential ecological risk factor.Transportation,agriculture and industrialpollution were the main sources of heavy metals.Therefore,emergent strategies and artificial regulations should be usedto control the sources of heavy metal pollutants in Jiaozhou Bay,especially in the northeast area.

关 键 词：胶州湾 沉积物 重金属 潮间带 风险评价 

分 类 号：X55[环境科学与工程—环境工程] X508