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计时电位法中,Mamantov和Delahay曾推导在球形电极的过渡时间方程式式中C,D,i_0,r_0,τ,n和F分别代表溶液中可还原物质的本体浓度、扩散系数、电流密度、电极半径、过渡时间、电子数和法拉第常数。他们用慢滴汞电极在过渡时间小于0.2秒时,以实验证明。McKeon利用悬汞电极,并借示波器观察E-t曲线,研究1M硫酸纳中的一价铊离子的还原,过渡时间在1.5至16秒内,所得结果与理论值一致。作者采用一高速笔录仪配录E-t曲线,研究1M氯化钾中的二价镉离子和三价铟离子在悬汞电极上还原,过渡时间从0.6至15秒,兼重复1M硫酸纳中的一价铊离子的工作,借以说明仪器装置与实验条件均适宜。实验所得之i_0τ~(1/2)/C与理论值一致,最大偏差为±3.9％,平均偏差为±1.4％。
In the chronopotentiometry, Mamantov and Delahay derived the transition time equations for spherical electrodes where C, D, i_0, r_0, τ, n, and F represent the bulk concentration, diffusion coefficient, current density, Radius, transition time, number of electrons and Faraday’s constant. They use a droplet mercury electrode in the transition time of less than 0.2 seconds, experimentally proved. Using a hanging mercury electrode, McKeon observed the E-t curve with an oscilloscope to investigate the reduction of monovalent thallium ions in 1 M sodium sulphate with a transition time of 1.5 to 16 seconds. The results are consistent with the theoretical values. The author uses a high-speed recording instrument recorded Et curve, the study of 1 M potassium chloride divalent cadmium ions and trivalent indium ions on the mercury electrode reduction, the transition time from 0.6 to 15 seconds, and repeat 1M sodium sulfate in a The price of thallium ions work, to illustrate the instrumentation and experimental conditions are suitable. The experimental i_0τ ~ (1/2) / C consistent with the theoretical value, the maximum deviation of ± 3.9%, the average deviation of ± 1.4%.