导数吸附伏安法测定水中超痕量的钒  

DETERMINATION OF ULTRATRACE VANADIUM IN WATER BY DERIVATIVE ADSORPTION VOLTAMMETRY

作　　者：石胜利[1] 王建燕 金文睿[3] 路建民[4] 

机构地区：[1]淄博师专化学系 [2]浙江化工学院化工系 [3]山东大学化学系,济南250100 [4]山东师范大学化学系

出　　处：《分析化学》1989年第12期1085-1089,共5页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金资助课题

摘　　要：本文讨论了钒(V)与5-Br-PADAP形成的配合物在悬汞电极上的不可逆吸附还原的导数吸附伏安法,并用所建立的方法测定了自来水中超痕量的钒(V)。方法的线性范围为7.5×10^(-10)～1×10^(-7)mol/L,检测下限为5×10^(-10)mol/L。Derivative technique is applied to irreversible reduction of the vanadium complex with 5-Br-PADAP at a hanging mercury drop electrode using linear sweep adsorption voltammetry.The theoretical and analytical characteristics have been investigated with first and second order derivative technique. The technique is more sensitive than that of normal linear sweep adsorption voltammetry.Vanadium can be detected down to 5×10^(-10)mol/L. This method has been applied to the determination of ultratrace vanadium in tap water.

关 键 词：水 吸附伏安法 钒 

分 类 号：O661.1[理学—分析化学]