辽河保护区表层沉积物风险污染物质清单筛选研究  

Screening of risk pollutants in surface sediment of Liaohe river protected areas

作　　者：可欣[1] 包清华[1] 黄晓妍 祁一芳 张海军[1] KE Xin;BAO Qing-hua;HUANG Xiao-yan;QI Yi-fang;ZHANG Hai-jun(College of Energy and Environment, Shenyang Aerospace University, Shenyang 110136, China)

机构地区：[1]沈阳航空航天大学能源与环境学院,辽宁沈阳110136

出　　处：《中国环境科学》2017年第8期3107-3113,共7页China Environmental Science

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07202-004-02)

摘　　要：通过对辽河保护区表层沉积物样品中污染物质的化学分析,获取了74种污染物的平均浓度水平.采用结合潜在危害指数的加权评分法进行有机污染物质风险清单的筛选;应用风险商值法对沉积物中非离子氨的生态风险进行评估,进而确定非离子氨是否列入风险污染物质清单;将沉积物重金属潜在生态风险指数法与EPA效应阈值比对相结合,筛选重金属风险污染物质清单.研究结果显示,辽河保护区表层沉积物风险污染物质清单包括8种污染物质:非离子氨、Cd、苯并[a]蒽、苯并[a]芘、敌敌畏、苯并[k]荧蒽、、茚并[1,2,3-c,d]芘.The average concentrations of74types of pollutants in surface sediment of Liaohe River protected areas were determined with the chemical analysis.A modified hazard potential index(HP)method,which took into account the summation of hazard potential values and occurrence and levels of organic pollutants,was applied for the calculation of weighted scores for each contaminant.The risk quotient was used in evaluating the ecological risk of nonionic ammonia in sediments to determine whether nonionic ammonia could be included in the list of risk pollutants.The potential ecological risk evaluation index and threshold effect concentration of EPA sediment quality guidelines were used together to screen heavy metals.The results showed that nonionic ammonia,Cd,Benzo[a]anthracene,Benzo[a]pyrene,Dichlorvos,and Benzo[k]fluoranthene,Chrysene and Indene[1,2,3-c,d]pyrene were risk pollutants in surface sediment of Liao protected areas.

关 键 词：辽河保护区 表层沉积物 潜在危害指数 加权评分法 风险商值 风险物质清单 

分 类 号：X142[环境科学与工程—环境科学]