甲基托布津对土壤中铜离子吸附影响及机理探讨  

The Effect of Cycosin on the Soil Adsorption of Cu^(2+) and the Mechanism

作　　者：彭国丽[1] 吴结革[1] 刘家春[1] 

机构地区：[1]金陵科技学院,江苏南京210038

出　　处：《化工中间体》2006年第12期16-18,27,共4页

摘　　要：实验室条件下,土壤吸附试验表明,甲基托布津能够使铜离子在土壤上的表观吸附量增加。对吸附数据进行拟合发现,吸附曲线符合Freundlich方程。甲基托布津的存在使得土壤吸附常数K值增大。铜离子选择电极测定甲基托布津与铜离子的pCu-pL关系曲线表明,铜离子和甲基拖布津能够以1:1的配位数配合。甲基托布津与铜形成不溶性络合物,从而使铜的表观吸附量增加。The soil adsorption tests in laboratory condition suggested that apparent adsorption content of Cu^2＋ could be enhanced by coexisting pesticide cycosin. Data showed that the Freundlich equation well and the adsorption constant K increased with cycosin adsorption curve fit in soil solution of Cu^2＋.The pCu-pL was deterimented by copper selected electrode which showed the complex number for Cu^2＋- cycosin was 1：1. Copper apparent adsorption amount increased due to the insolube complex Cu^2＋-cycosin formation.

关 键 词：甲基托布津 铜 吸附 机理 铜离子选择电极 

分 类 号：O047.311[理学]