中文摘要：

研究以双水杨醛乙二胺[BBG]为中性载体，制备了一种对锰离子（Mn^2＋）具有优良的电位响应特性的离子选择性电极，其选择性次序为：Mn^2＋〉〉Rb^＋〉Al^3＋〉Ca^2＋〉Bi^3＋〉Cu^2＋〉Co^2＋〉Fe^3＋〉Cd^2＋〉Ba^2＋〉Ce^3＋〉Cr^3＋〉La^3＋〉Na^＋。该电极在pH3．0的NaOH—HNO，溶液体系中具有最佳的电位响应，在1．0×10^-1moL／L-1．0×10^-5moL／L Mn^2＋浓度范围呈近能斯特响应，斜率为32．0mV／p Mn^2＋（25℃），检测下限为8．0×10^-6mol/L。采用交流阻抗和紫外光谱分析技术研究了配合物本身的结构对电极电位响应行为的作用机理。将该电极用于实际样品的测定，获得满意的结果。

英文摘要：

A new highly selective Mn^2＋ PVC membrane electrode based on Ethyenebis - salicyldiminate [ BBG] as neutral carrier is reported,which displays selectivity sequence in the following order： Mn^2 ＋ 〉 〉 Rb^＋ 〉 Al^3＋ 〉 Ca^2＋〉 Bi^3＋〉 Cu^2＋〉 Co^2＋ 〉 Fe^3＋ 〉 Cd^2＋ 〉 Ba^2＋ 〉 Ce^3 ＋ 〉 Cr^3 ＋ 〉 La^3 ＋ 〉 Na^＋. The electrode exhibits Nemstian potential linear range to Mn^2＋ from 1.0 × 10^-1 to 1.0 × 10^-5 mol/L with a detection limit 8.0 × 10^-6 mol/L and a slope of 32.0mV/dec in pH 3.0 of NaOH - HNO3 solution at 25 ℃. The response mechanism is discussed in view of the a.c. impedance technique and the UV spectroscopy technique. These deviations result from the direct interaction between analyte ion and steric effect associated with the structure of the carrier. The electrode based [ BBG] compound was used to determine the Mn^2＋ content in sample with satisfactory results.