中国主要河口沉积物中PCBs潜在生态风险研究  

Ecological Risk Assessment of Sediment PCBs Pollution in Main Estuaries of China

作　　者：杨建丽[1] 刘征涛[2] 周俊丽[2] 冯流[1] 

机构地区：[1]北京化工大学,北京100029 [2]中国环境科学研究院国家环境保护化学品生态效应与风险评估重点实验室,北京100012

出　　处：《环境科学与技术》2009年第9期187-190,197,共5页Environmental Science & Technology

基　　金：国家重点基础研究发展计划(973)项目(2002CB412401);中国环境科学研究院中央级公益性科研院所基本科研业务专项资助项目(2007KYYW11)

摘　　要：根据我国主要河口沉积物中多氯联苯的污染水平,对沉积物中多氯联苯分别采用Hakanson潜在生态危害指数法和加拿大环境委员会制定的SQG方法进行了初步风险评价,并分析了多氯联苯污染的环境来源及影响因素。结果表明:用两种方法评价的结果一致。珠江河口多氯联苯污染最为严重;闽江口、九龙江口和长江口次之。对这些河口而言,严重的生态风险并不存在,但部分站位存在一定的潜在威胁;黄河口、鸭绿江口、辽河口的多氯联苯潜在生态风险较低。Two different methods including Hakanson ecological risk index method and Canadian sediment quality guidelines （SQG） for PCBs were used for assessment of ecological risks of PCBs based on the concentration of PCBs in the sediments from different estuaries in China, and source of PCBs and major affecting factors were also studied. Assessment results were very similar which used the above two method. PCBs pollution was the worst in Zhujiang Estuary, followed by Minjiang Estuary, Jiulongjiang Estuary and Yangtze River Estuary. For all the investigated estuaries serious risk threat of PCBs was not exist. Potential risk might occur to some sites of the estuaries. Ecological risks of PCBs in sediment were relatively low in Yellow River Estuary, Yalujiang Estuary and Liaohe Estuary.

关 键 词：多氯联苯 沉积物 河口 风险评价 

分 类 号：X820.4[环境科学与工程—环境工程]