我国主要河流中3种氯酚混合物的生态风险评价  

Ecological Risk Assessment of Three Chlorophenols in the Main Rivers in China

作　　者：张亚辉[1] 曹莹[1] 李霁[1] 雷昌文[1,2] 刘征涛[1] 

机构地区：[1]中国环境科学研究院,环境基准与风险评估国家重点实验室,北京100012 [2]桂林理工大学环境科学与工程学院,广西桂林541004

出　　处：《环境科学研究》2012年第4期385-390,共6页Research of Environmental Sciences

基　　金：国家水体污染控制与治理科技重大专项(2008ZX07526-003)

摘　　要：氯酚类化合物是我国河流中广泛存在的一类优先控制污染物.利用基于相似作用模式的混合物风险商(RQm)的方法,对我国主要河流中五氯酚、2,4-二氯酚和2,4,6-三氯酚组成的混合物进行了生态风险评价.结果表明:我国河流中3种氯酚化合物的RQm均小于1.黄河中3种氯酚化合物的RQm最高为0.377,长江、珠江、淮河和松花江中3种氯酚化合物的RQm分别为0.055、0.039、0.035和0.010,其他河流的RQm均小于0.010.整体上看,我国北部河流3种氯酚化合物的RQm比南部河流高.Chlorophenol chemicals are one kind of the priority pollutants widely distributed in the waters of China.The ecological risks of a mixture of three chlorophenols（pentachlorophenol,2,4-dichlorophenol and 2,4,6-trichlorophenol） in the main rivers in China were assessed by deriving the risk quotient for mixtures（RQm） of chemicals with a similar mode of action.The RQm values of the chlorophenol mixtures in all the rivers were lower than 1.The value was the highest（0.377） in the Yellow River,while the values in the Yangtze,Huaihe,Haihe and Songhua Rivers were 0.055,0.039,0.035 and 0.010,respectively.The values of RQm in the other rivers in China were lower than 0.010.In general,the mixed ecological risks of the three chlorophenols to aquatic organisms were higher in the Northern rivers than in the Southern rivers in China.

关 键 词：氯酚 混合物 生态风险评价 

分 类 号：X522[环境科学与工程—环境工程]