锌(Ⅱ)-邻菲罗啉络合物的极谱行为及应用  

STUDIES ON THE POLAROGRAPHIC BEHAVIOR AND APPLICATION OF Zn(Ⅱ)-PHENANTHROLINE COMPLEX

作　　者：李丽敏[1] 贾兴保[1] 慕晓刚[1] 

机构地区：[1]潍坊学院化学化工系,潍坊261061

出　　处：《理化检验（化学分册）》2006年第6期430-431,434,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：山东省教育厅科技开发项目(批准号03A51)

摘　　要：在0．075mol·L^-1硼酸-氢氧化钠的缓冲溶液中（pH8．9），锌（Ⅱ）与邻菲罗啉形成的络合物是电活性的，于-1．30V（vs．SCE）产生较灵敏的极谱峰，峰电流与锌（1I）浓度在4．0×10^-8～2．0×10^-6mol·L^-1之间存在线性关系（r-0．9986），检出限为2．0×10^-8mol·L^-1。利用线性扫描极谱法探讨了极谱峰的电化学性质及电极反应机理，并将该法成功应用于测定葡萄糖酸锌口服液中锌的含量。In a borate buffer medium of pH 8. 9, a complex was formed between Zn （Ⅱ） and ophenanthroline, [Zn（phen）2], showing a sensitive polarographic wave at the potential of -1.30 V（vs. SCE）. The peak current of the polarographic wave kept a linear relationship with the concentration of Zn（ Ⅱ ） in the range of 4. 0×10^-8 -2. 0× 10^-6mol · L^-1 （r=0. 998 6）. Detection limit was found to be 2. 0× 10^-8mol · L^-1. Behavior and mechanism of the electrochemical reaction of the polarographic peak was investigated using linearsweep polarography. The method has been applied to the determination of zinc in zinc gluconate oral liquor.

关 键 词：线性扫描极谱法 锌 邻菲罗啉 吸附波 

分 类 号：O657.14[理学—分析化学]