摘要
以兰州市区为研究区域,以屈(Chrysene)和2,3,7,8-四氯二苯-p-二噁英(2,3,7,8-TCDD)两种典型持久性污染物为例,应用RAIDAR(Risk Assessment Identification And Ranking)模型对它们在研究区域环境中的潜在生态风险进行模拟计算和评价,并根据LevelⅡ和LevelⅢ的计算结果对污染物按风险进行归类。模拟结果表明:以全部排放到大气计算,且以非生物介质中的阈值分析时,2,3,7,8-TCDD的RAF(Risk Assessment Factor)值是1940,归为A类化合物,CHr的RAF值为10.8,归为B类化合物。将RAIDAR模型用于污染物的风险评价,以筛选出那些急需进行评价的污染物作进一步的分析是很有研究意义的。
RAIDAR model was used to simulate and estimate the potential ecological risk of chrysene and 2,3,7,8-TCDD in Lanzhou City,which were typical persistent organic pollutants.The model could also bin substances into categories of similar probable risk prior order based on simple Level Ⅱ or more complex Level Ⅲ fate calculations.The simulation results showed that if all pollutants were discharged into atmosphere and objective endpoints were used to estimate the risk,2,3,7,8-tetrachlorodibenzo-p-dioxin which had ...
出处
《环境科学与技术》
CAS
CSCD
北大核心
2010年第11期186-190,共5页
Environmental Science & Technology
基金
甘肃省自然科学基金(0803RJZA085)
关键词
兰州
持久性有机污染物
RAIDAR模型
生态风险评价
Lanzhou City
persistent organic pollutants
risk assessment identification and ranking model （RAIDAR model）
ecological risk assessment
