论文部分内容阅读
采用恒电流库仑法分析铀氧化物中的铀。方法基于铀在硫-磷混合酸中以Cr(Ⅱ)还原U(Ⅵ)为U(Ⅳ),过量的Cr(Ⅱ)在空气中被氧化、准确加入比铀的化学计量略过量的重铬酸钾,以精密恒电流源电生Fe(Ⅱ)库仑滴定过量的Cr(Ⅵ)。方法的精密度优于0.01%。
Uranium in Uranium Oxide by Constant Current Coulometric Method. Based on the uranium reduction of U (Ⅵ) to U (Ⅳ) with Cr (Ⅱ) in sulfur-phosphorus mixed acid, the excess Cr (Ⅱ) is oxidized in air and the stoichiometric excess of heavy chromium K (superscript 2 +), and excess Cr (Ⅵ) by coulometric titration with a precision constant current source. The precision of the method is better than 0.01%.