CAJ | 학술논문

运用Level Ⅲ逸度模型,研究了我国环境介质中二(噁)英的平均浓度水平和迁移规律. 比较不同尺度下的模拟结果表明,Level Ⅲ逸度模型可以应用于较大尺度的研究. 数据显示,虽然我国二(噁)英排放总量较大,但是环境介质中TEQ(指二(噁)英毒性当量质量浓度)平均值仍处于较低水平,大气中TEQ平均值仅为4.26～15.10 fg/m~3,土壤中TEQ平均值为0.013 5～0.115 0 pg/g,沉积物中TEQ平均值为0.445～2.300 pg/g. 达到稳态时二(噁)英的外界输入影响较大,且主要的迁移过程是从大气到土壤.
운용Level Ⅲ일도모형,연구료아국배경개질중이(오)영적평균농도수평화천이규률. 비교불동척도하적모의결과표명,Level Ⅲ일도모형가이응용우교대척도적연구. 수거현시,수연아국이(오)영배방총량교대,단시배경개질중TEQ(지이(오)영독성당량질량농도)평균치잉처우교저수평,대기중TEQ평균치부위4.26～15.10 fg/m~3,토양중TEQ평균치위0.013 5～0.115 0 pg/g,침적물중TEQ평균치위0.445～2.300 pg/g. 체도은태시이(오)영적외계수입영향교대,차주요적천이과정시종대기도토양.
Levels and fates of dioxins in the environment are simulated by the level Ⅲ fugacity model, based on the dioxin release inventory of China. Comparing the results at different scales, we find that the level Ⅲ fugacity model can be used for large scale simulation. It shows that dioxin concentrations in environmental media are still fairly low, although the total release amount of dioxins in China is higher than that in most other countries. The average TEQ concentrations in air, soil and sediment are 4.26-15.10 fg/m~3, 0.0135-0.1150 pg/g and 0.445-2.300 pg/g respectively. The inflow of dioxins through the atmosphere is the major contributor instead of the local sources, and soil is the main sink of dioxins.