利用滴定肼、跟踪七价锝浓度随时间变化的方法,研究了硝酸介质中得与肼的反应。实验证实:锝与肼的反应存在诱导期,该诱导期的时间长度与七价锝的初始浓度有关,与肼的初始浓度无关; The titration of hydrazine was used to trace the change of the concentration of heptavalent technetium over time. The reaction between hydrazine and nitric acid was studied. The experiment confirmed that the reaction between technetium and hydrazine has an induction period, and the duration of the induction period is related to the initial concentration of the seven-valent technetium and has nothing to do with the initial concentration of hydrazine;