In this study, the Schiff's base of 2-{[(Z)-1-(2-methoxyphenyl) ethylidene] amino}-1-benzenethiol (MPEAB) was synthesized. By cyclic voltammetry and electrochemical impedance spectroscopy (EIS), the electrochemical behavior of self-assembled monolayer of Schiff's base on a bare gold electrode (Au MPEAB SAM electrode) was investigated. Also, the surface pK_a, adsorption kinetics, equivalent circuit model and capacitance detection investigated by EIS method in 0.1 mol L⁻¹ PBS containing 5.0 mmol L⁻¹ [Fe(CN)₆]^3−/4−. The EIS complex plane plots showed a drastic change in the charge transfer resistance of the probe redox reaction as a function of UO₂²⁺ concentration. This behavior was used for construction of the calibration curve, and a linear range from 1.0 to 40.6 nmol L⁻¹ UO₂²⁺ with a detection limit of 0.21 nmol L⁻¹ and a relative standard deviation (RSD) of 1.17% for n = 4 at 1.0 nmol L⁻¹ UO₂²⁺ was observed.

在这项研究中，合成了2-{[（（Z）-1-（2-甲氧基苯基）亚乙基]氨基} -1-苯硫醇（MPEAB）的席夫氏碱。通过循环伏安法和电化学阻抗谱（EIS），研究了席夫碱自组装单层在裸金电极（Au MPEAB SAM电极）上的电化学行为。另外，在含有5.0mmol L ^-1 [Fe（CN）₆ ] ^{3- / 4-的}0.1mol L ^-1 PBS中，通过EIS方法研究了表面p K _a，吸附动力学，等效电路模型和电容检测。EIS复杂平面图显示，探针氧化还原反应的电荷转移电阻随UO ₂ ^2+的变化而急剧变化浓度。使用此行为用于构建校准曲线和线性范围为1.0至40.6纳摩尔大号^-1 UO ₂ ²⁺ 0.21纳摩尔升的检测限^-1和1.17％对的相对标准偏差（RSD）ñ 在1.0nmol L ^-1 UO ₂ ²⁺下观察到＝ 4 。