本文推导了示差脉冲极谱催化电流方程式,对催化电流的性质进行了讨论,并用草酸钛(Ⅳ)-氯酸钾体系对方程式进行了验证,实验结果与理论相符合。测定草酸钛(Ⅲ)与氯酸钾反应速率常数(k_f)值,与由其他极谱方法所得的结果相同。 In this paper, the differential pulse polarographic catalytic current equation was deduced, the catalytic current properties were discussed, and the equation was validated by using titanium oxalate (Ⅳ) - potassium chlorate system. The experimental results are consistent with the theory. The reaction rate constant (k_f) of titanium (III) oxalate with potassium chlorate was determined to be the same as that obtained by other polarographic methods.