动态法研究杀虫单溶液在土壤中的吸附  

A Study on Adsorption of Monosultap in Soil by Dynamic Methods

作　　者：刘莹[1] 杨志生[1] 郭廼琦[1] 李岩[1] 王健[1] 

机构地区：[1]天津理工学院生化学院,天津300191

出　　处：《农药》2004年第7期309-311,共3页Agrochemicals

基　　金：天津市自然科学基金资助项目 (0 2 2 60 951 1 )

摘　　要：本实验采用土柱滴流的动态分析方法研究了杀虫单溶液在土壤中的吸附行为 ,考察了土壤质量、pH值、土壤颗粒粒度和杀虫单溶液浓度等因素对吸附的影响。实验结果表明 ,随土壤pH值提高 ,其吸附杀虫单的量增加 ;土壤颗粒越小 ,其吸附能力越强 ;杀虫单溶液浓度升高 ,吸附速率加快 ,吸附量增加 ;土壤质量减少时 ,其吸附速率增高。本研究还用一级动力学微分方程拟合吸附过程 。The adsorption behavior of monosultap in the soil was conducted by dynamic analysis methods.The factors (eg.soil mass,soil pH value,the concentration of monosultap pesticide,soil granularity) that affect the adsorption were investigated and researched.The experimentresult shows the adsorption of monosultap increases along with soil pH increasing,and the less size of granule,the greater adsorption of monosultap is.The result also indicates that enhancing the concentration of monosultap speeds up the adsorption rate of monosultap and increases the adsorption amount,and decreasing the soil mass can also quicken the adsorption rate.In this research,an expression of apparent adsorption rate constant was worked out by fitting adsorption process in with 1st grade dynamic differential eguation.

关 键 词：动态法 吸附 杀虫单 土壤 

分 类 号：X592[环境科学与工程—环境工程]