苯并(a)芘的环境多介质迁移和归宿模拟  

Simulation of multi-media transfer and fate of benzo[a]pyrene

作　　者：李静[1] 吕永龙[1] 王铁宇[1] 焦文涛[1] 史雅娟[1] 罗维[1] 汪光[1] 王斌[1] 

机构地区：[1]中国科学院生态环境研究中心城市与区域生态国家重点实验室

出　　处：《环境工程学报》2008年第2期279-284,共6页Chinese Journal of Environmental Engineering

基　　金：国家重点基础研究发展“973”项目(2007CB407307);中国科学院知识创新工程重要方向性项目(KZCX2-YW-420-5)

摘　　要：利用Level III逸度模型,模拟分析了苯并(a)芘在天津地区气、水、土和沉积物多介质相间的浓度分布、迁移通量和累积趋势,结果表明:气、水相的平流输入是该区域苯并(a)芘的主要来源,土壤和沉积物是其最大的储库,占总残留量的99.38%;在气、水、土和沉积相中的浓度分别为1.96×10-10mol/m3、3.26×10-6mol/m3、1.34×10-3mol/m3和7.74×10-3mol/m3时,模型估测结果与同期实测浓度吻合较好,验证了模型的可靠性,并通过灵敏度分析,确定了模型的关键参数。Physical environment parameters in Tianjin were input to Level Ⅲ fugacity model to calculate the concentrations of benzo[a] pyrene in air, soil, water and sediment, and multi-interface transfer flux and cumulative trend in Tianjin. The results indicated that （1） the reliability of the model was verified by the coincidence of the calculated and the measured concentration in the same period;（2） in air, water, soil and sediment bulks, the concentrations of benzo[a] pyrene were 1.96 × 10^-10 mol/m^3 , 3.26 × 10 ^- 6 mol/m^3 , 1.34 × 10 ^- 3 mol/ m^3 and 7.74 × 10^-3 mol/m^3 , respectively; （3） advection inflows in air and water were the major sources of benzo[a] pyrene in this area; （4） soil and sediment served as the largest storage of benzo[a] pyrene, accounting for 99.38% of the total amount of residuals. The key model parameters were identified through sensitivity analysis.

关 键 词：苯并(A)芘 逸度模型 多介质迁移 归宿 

分 类 号：X592[环境科学与工程—环境工程]