铅铋混合液中铅、铋连续测定方法改进

摘要

通过对铅（Pb2＋）、（Bi3＋）混合液配制方法与测定结果关系的实验，确定了硝酸铋溶解时的浓HNO3用量，解决了实验中滴定铋Bi3＋时用NaOH溶液多次予调试试液pH≈1的不准与麻烦。本文确定的实验方法，节省药品、操作快速、终点时突跃明显，易于观察，便于在实验中准确滴定%Relations between Pb2＋,Bi3＋in mixed solution compound and testing results were studied.During Bi(NO3）3 dissolving,quantity of HNO3 needed were determined。The method overcame the d iff iculty and obtained the precision that the solution of NaOH debuge sample soluti on was pH≈1.The methed that the experiment used is not noly saving reagent but a l so saving the experiment time.Titrate termined mutation is very obvious in the d estination.It is very easy to abserve and convenient to titrate precisely in ex periments for students.