【摘要】 本文成功地制备了Eastman-AQ-55D聚合物修饰碳纤维电极,用循环伏安法探讨了一些实验参数的影响,并对Ru（NH₃）₆³⁺、甲基紫精进行了分析,结果表明,AQ-55D修饰的微电极稳定性好,修饰方法简单,灵敏度和选择性都有一定的提高,Ru（NH₃）₆³⁺、甲基紫精的峰电流与浓度在1.2×10^-6～1.2×10^-5mol/L、1.7×10^-6～1.4×10^-5mol/L范围内呈线性关系,其相关系数分别为0.999、0.998.利用此电极测定了几种离子在膜中的扩散系数.更多还原

【Abstract】 A carbon fiber electrode modified with Eastman-AQ polymer film was successfully prepared, effects of some experimental parameters were assessed. The behavior of (Ru(NH3)63+ and MV2+(methyl viologen) were investigated by cyclic voltammetry. AQ-55D modified microelectrode possesses high stability, selectivity and sensitivity, the linear ranges of Ru(NH3)63+ and MV2+ are 1. 2 ×10-6- 1. 2×10-5 mol/L and 1. 7×10-6-1. 4×10-5 mol/L, and the correlation coefficients are 0. 999 and 0. 998, respectively. Diffusion coefficients of some ions in the film were determined by chronoamperometry at AQ coating microdisk electrode.更多还原