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采用电感耦合等离子原子发射光谱法(ICP-AES),试样用HCl+HNO3溶解,经过阴离子交换树脂分离,一次性使基体铀与稀土杂质元素分离,用超声雾化测定U3O8样品中Dy含量。并对影响测定的各种因素进行了较详细的试验研究,确定了测定的最佳条件。方法平均回收率在93%~108%之间,相对标准偏差(RSD,n=8)优于±5.6%。
The samples were dissolved with HCl + HNO3 and separated by anion exchange resin. The Uranium and rare earth elements were separated in one time. The content of Dy in U3O8 samples was determined by ICP-AES. And a variety of factors affecting the determination of a more detailed experimental study to determine the best determination of the conditions. The average recovery was between 93% and 108%, and the relative standard deviation (RSD, n = 8) was better than ± 5.6%.