扑草净和扑灭通在土壤中吸附及其与色谱热力学函数的相关性  

ADSORPTION OF HERBICIDE PROMETRYNE AND PROMETON ON SOILS AND CORRELATION WITH THEIR CHROMAT-OGRAPHIC THERMODYNAMICS

作　　者：杨炜春[1] 刘维屏[1] 马云[1] 刘惠君[1] 

机构地区：[1]浙江大学玉泉校区环境科学研究所,杭州310027

出　　处：《土壤学报》2002年第5期693-698,共6页Acta Pedologica Sinica

基　　金：国家自然科学基金资助项目 (编号 3 9670 42 0 )

摘　　要：本研究比较了除草剂扑草净和扑灭通在 6种土壤中的吸附 ,采用Freundlich方程对其吸附等温线进行描述 ,对Freundlich方程吸附常数Kaf与土壤理化性质的相关性进行了分析 ,由于反相高效液相色谱流动相组成与扑草净和扑灭通容量因子成线性关系 ,从而测定了扑草净和扑灭通的过量热力学函数ΔH ,证明扑草净和扑灭通在土壤中的吸附与ΔH 存在一定的关系 ,从而提出ΔH 和ΔS 可作为研究农药性质的重要参数之一。Adsorption of prometryne and p rometon on 6 kinds of soils was measured with the batch equilibration technique. It was found that adsorption isotherms could fit Freundlich equation well.The ex cess thermodynamic properties of the triazine in liquid chromatography were also studied.The linear relationship between the composition of the mobile phase and triazine's capacity factor was determined.The adsorption in soil showed some re lationship with the excess thermodynamic properties.The excess thermodynamic pro perties might be considered one of the important parameters of pesticide.

关 键 词：扑草净 扑灭通 土壤 过量热力学函数 吸附 脱附 除草剂 高效液相色谱 

分 类 号：TQ457.2[化学工程—农药化工]