摘要
介绍了采用EDTA返滴定法测定铀钼合金中钼含量的方法。以王水溶样,用磷酸三丁酯-氢化煤油萃取分离铀,采用盐酸羟胺将Mo6+还原为Mo5+,用EDTA络合Mo5+,然后用锌标准溶液返滴定过量的EDTA,从而完成铀钼合金中的钼含量测定。优化了方法的实验条件,实验表明,相对标准偏差(RSD)为1.4%。
A method for the determination of Molybdenum in Uranium-Molybdenum alloy by EDTA back titration was described. After being digested by aqua regia, uranium was extracted by TBP-hydrogenated kerosene. To reduce Mo6＋ to Mo5＋ , hydroxyl lammonium chloride was added into the residual solution and then the solution was subsequently complexed with an excess amount of EDTA. The excessive EDTA was titrated with zinc standard solution. The amount of molybdenum was calculated according to the above results. The experiment conditions were optimized and satisfactory results were obtained. The result showed that the relative standard deviation （RSD） was 1.4%.
出处
《中国无机分析化学》
CAS
2014年第3期57-60,共4页
Chinese Journal of Inorganic Analytical Chemistry
基金
国家自然科学基金资助项目(59493300)
教育部博士点基金资助项目(9800462)资助
关键词
返滴定法
核燃料
铀钼合金
EDTA
back titration
uranium-molybdenum alloy
