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针对Cu(II)与L-谷氨酸(Glu)二元体系循环伏安特性,研究了pH、扫描速率及浓度等因素对峰电流的影响.结果表明当pH=3.83,扫描速率v=29mV/s时,Cu(II)与L-谷氨酸二元体系循环伏安图中的峰电流最大.该实验条件下在铂盘电极上的电极反应过程为扩散控制的准可逆过程;对Cu(II)与L-谷氨酸等摩尔比的体系,其还原峰的电子转移系数为0.55,在200mV/s时,标准速率常数K_S=0.56s~(-1).
Cyclic voltammetry of Cu (II) and L-glutamic acid (Glu) binary systems was investigated, and the effects of pH, scan rate and concentration on the peak current were studied. The results showed that when pH = 3.83 and scan rate v = 29mV / s, the peak current in the cyclic voltammogram of the binary system of Cu (II) and L-glutamic acid is the largest.The electrode reaction process on the platinum plate electrode under this experimental condition is the quasi-reversible process of diffusion control. For Cu (II) and L-glutamic acid in the molar ratio of the system, the reduction peak electron transfer coefficient of 0.55 at 200mV / s, the standard rate constant K_S = 0.56s ~ (-1).