用电导滴定法测量UO_2(NO_3)_2-HNO_3-H_2O系统中的自由硝酸和铀

摘要: 本文叙述了在HNO_3—UO_2(NO_3)_2—H_2O的体系中,不经任何事先化学处理,应用电导滴定法直接测定出体系中的HNO_3含量,并研究了当一定量的Fe(Ⅲ),Cr(Ⅲ、Ⅵ),Al盐存在时对测定HNO_3的影响。本文中描述了测定NaOH与UO_2(NO_3)_2反应时的克分子比值,并利用此克分子比值在一次电导滴定中同时测出HNO_3—UO_2(NO_3)_2—H_2O体系中的HNO_3及UO_2(NO_3)_2的含量,误差不大于3％。

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