铀混合物中铀的定量分析技术

Study on Quantitative Analysis Technique of Uranium in Uranium Mixture

研究了铀混合物中铀的溶样方法、测定方法以及基体的干扰等测定条件,包括:加入氟化铵络合溶液中的基体元素来消除对铀测定的影响。模拟试样的平行测定结果表明:方法的相对标准不确定度优于0.2%;测定的铀含量约为标称值的98.8%。

Determination conditions of uranium mixture such as dissolve method of uranium, determination method and interference of matrix were studied. Interference on the determination of uranium was eliminated by coordinating matrix elements in solution with NH4F. The quantitative analysis method of uranium in uranium mixture was built by precision experiments. Relative standard uncertainty of this method was below 0.2% by determination of simulation samples.