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恒电流库仑滴定时无论用电位法或是用电流法指示终点,恒电流都会影响指示信号的观测;用新极谱分析法指示恒电流库仑滴定终点,同样受恒电流干扰,为了判断滴定终点,需多次断电停止滴定,观测峰高。本文提出根据两次间隔滴定观测到的峰高获得分析结果的方法。 对滴定反应aA+bB=AaBb,当滴定剂A是电生时,在滴定过程中溶液体积不会改变,则A或B的新极谱图的峰高将与溶液中A或B的摩尔数成正比。根据两次测定等当点前待测物
Constant current coulometric titration either by potentiometry or by the current method of indicating the end point, the constant current will affect the indication signal observation; Polarographic titration with new polarographic analysis of the end point, the same constant current interference, in order to determine the end of the titration , Need to stop measuring titration repeatedly, observe the peak height. In this paper, we propose a method to obtain the analytical results based on the peak heights observed by two-interval titration. For titration reaction aA + bB = AaBb, when titrant A is electrically generated, the volume of the solution does not change during the titration. The peak height of the new polarographic plot of A or B will then be proportional to the number of moles of A or B in solution Is proportional. According to the two measurements waiting for the point before the test object