利用一阶导数滴定曲线图中极值的位置,确定等当点,是电势滴定法中用以确定等当点的经典方法之一。但是,正确绘制导数滴定曲线的方法,却一直并没有解决好。因此,即使在国外最近的一些名著及国内现行的最新教材中,也不乏绘错之例。至于教学中经常碰到这一问题,则更是普遍现象了。 Using the first derivative titration of the extreme position in the graph to determine the equivalence point is one of the classical methods used in potentiometric titration to determine equivalence points. However, the correct method of deriving the derivative titration curve has not been solved yet. Therefore, even in some recent works abroad and the latest teaching material in China, there is no lack of mistakes. As for the problems often encountered in teaching, it is even more prevalent.