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估算天津环境中γ-HCH归宿的逸度模型
引用本文:曹红英,龚钟明,曹军,李本纲,徐福留,陶澍. 估算天津环境中γ-HCH归宿的逸度模型[J]. 环境科学, 2003, 24(2): 77-81
作者姓名:曹红英  龚钟明  曹军  李本纲  徐福留  陶澍
作者单位:北京大学城市与环境学系 北京100871;北京大学城市与环境学系 北京100871;北京大学城市与环境学系 北京100871;北京大学城市与环境学系 北京100871;北京大学城市与环境学系 北京100871;北京大学城市与环境学系 北京100871
基金项目:国家自然科学基金资助项目(49971070,40031010,40024101)
摘    要:以全天津市为研究区域,利用稳态假设的逸度模型,用Matlab软件计算了γ-HCH(林丹)在环境各相中的浓度和相间迁移通量.γ-HCH在天津气、水、土壤、沉积物、鱼、作物、蔬菜各相中的浓度分别为1.57×10-11、7.95×10-7、1.17 × 10-4、4.58×10-4、6.03×10-4、1.60×10-4和6.42×10-5mol/m3,在数量级上与实测值吻合很好.估算结果表明农业施用和农药厂废水是该地区环境中γ-HCH最主要的来源,最大的汇是土壤和沉积相(占环境中总量的99%),最主要的迁移过程是水-沉、气-土的扩散和沉降,土壤和沉积物中的降解是γ-HCH消失的最主要途径.

关 键 词:γ-HCH  逸度模型  多介质模型  通量
文章编号:0250-3301(2003)02-05-0077
收稿时间:2002-04-24
修稿时间:2002-04-24

Evaluating the fate of gamma-HCH using fugacity model in Tianjin environment
Cao Hongying,Gong Zhongming,Cao Jun,Li Bengang,Xu Fuliu and Tao Shu. Evaluating the fate of gamma-HCH using fugacity model in Tianjin environment[J]. Chinese Journal of Environmental Science, 2003, 24(2): 77-81
Authors:Cao Hongying  Gong Zhongming  Cao Jun  Li Bengang  Xu Fuliu  Tao Shu
Affiliation:Department of Urban and Environmental Sciences, Peking University, Beijing 100871, China.
Abstract:This study taking Tianjin as the study area calculated the concentration and transfer flux of gamma-HCH in all bulks using Matlab based on the assumption of steady state fugacity model. The calculated values agree well with the observed values, the concentrations of gamma-HCH in air, water, soil, sediment, fish, crop, and vegetable were 1.57 x 10(-11), 7.95 x 10(-7), 1.17 x 10(-4), 4.58 x 10(-4), 6.03 x 10(-4), 1.60 x 10(-4), 6.42 x 10(-5) mol/m3 respectively. The result indicated that the main source of gamma-HCH was agricultural application and wastewater from pesticide industries, the biggest bulk sinks were soil and sediment (accounting for 99% of total amount in the environment). Among all transfer processes deposition and diffusion on the water-sediment and air-soil interface were the primary, and mineralization was the key route for gamma-HCH to disappear in the environment.
Keywords:HCH  fugacity model  multimedia model  transfer flux
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