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测定四氟化铀中总铀量的方法尚不多见。罗登提出的直接灼烧法及高温水蒸汽分解法均有较大的局限性,前法中四氟化铀转化为八氧化三铀时,有六氟化铀挥发之虞,后法中设备昂贵,操作繁杂。在容量法方面,徐理阮用钍试剂作指示剂,在pH为1.0—1.8间以EDTA滴定0.1—50毫克范围内的铀(Ⅳ),并将此法用于测定四氟化铀中的铀含量,但依操作过程看来,该法实际上只能测定样品中的纯UF_4组分,而非总铀量。
The method for determining the total amount of uranium tetrafluoride in uranium is still rare. Rodenden proposed direct burning method and high temperature steam decomposition have greater limitations, the former method in the conversion of uranium tetrafluoride to uranium octaoxide, there is the danger of uranium hexafluoride volatilization, after France equipment Expensive, complicated operation. In the capacity method, Xu Li Nguyen thorium reagent as an indicator, at pH 1.0-1.8 with EDTA titration of 0.1-50 mg of uranium (Ⅳ), and this method for the determination of uranium tetrafluoride Uranium content, but it appears from the process of operation, the law can actually only determine the sample of pure UF_4 components, rather than the total amount of uranium.