农业环境科学学报2011，Vol.30Issue(2)：295-300,6.
1,1,2,2-四氯乙烷在土壤中的吸附解吸研究及解吸滞后的新型模型模拟
Sorption and Desorption of 1,1,2,2-Tetrachloroethane in Soils and New Model Prediction of Desorption Hysteresis
摘要
Abstract
In this study, the sorption and desorption of 1,1,2,2-tetrachloroethane(TeCA) in four soils were investigated.The desorption data was modeled using a new desorption model-“Dual-Equilibrium Desorption(DED) model”.The results indicated that the sorption of TeCA agreed well with the conventional linear sorption isotherm and the mean value of lg Koc was 1.86.However, the desorption exhibits significant hysteresis.The value of 1g Koc after desorption (with mean value of 4.88 ) was significantly higher than that before desorption.The value was independent of the original concentrations of adsorbed TeCA in soils and of soil properties.In comparison with the traditional linear model,the desorption hysteresis of TeCA in soils could be predicted well with the DED model.关键词
1,1,2,2-四氯乙烷/吸附/解吸Key words
1,1,2,2-tetrachloroethane/ sorption/ desorption分类
资源环境引用本文复制引用
王方,张承东..1,1,2,2-四氯乙烷在土壤中的吸附解吸研究及解吸滞后的新型模型模拟[J].农业环境科学学报,2011,30(2):295-300,6.基金项目
高等学校博士学科点专项科研基金资助课题(20060055035) （20060055035）
科技部国际科技合作项目(2009DFA91910) （2009DFA91910）
