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本文介绍一种在铁载体存在下,用H_2O_2/NaOH以氢氧化物选择性沉淀分析物分离铀后,用电感耦合等离子体原子发射光谱法(ICP-AES)测定富铀地质样品(铀含量>0.1％)和沥青铀矿类样品中的钇、钪和其他稀土元素的快速方法。铀以可溶性过铀酸盐络合物进入溶液。将沉淀的稀土氢氧化物(包括Y和Sc)过滤,并溶于HCl中,再吸入等离子体,选择无干扰的BEE发射谱线后,进行各元素的测定。该法已应用于某些国际参考标准如SY-2和SY-3(掺入已知量的铀)以及一个内部的沥青铀矿样品,发现REE值与最稳定值一致,所有BEE、Y和Sc的RSD为1％～8.8％。该法可与确定良好的阳离子交换分离法比拟。
In this paper, a method for the determination of uranium enriched geological samples (Uranium content) by inductively coupled plasma atomic emission spectrometry (ICP-AES) after the separation of uranium with H 2 O 2 / NaOH by selective precipitation of analytes with hydroxide in the presence of iron carriers > 0.1%) and yttrium, scandium and other rare earth elements in samples of bitumen uranium. Uranium enters the solution as soluble uranyl complex. The precipitated rare earth hydroxides (including Y and Sc) were filtered, dissolved in HCl, and then pumped into the plasma. The emission spectra of the non-interfering BEE were selected and the elements were determined. This method has been applied to some international reference standards such as SY-2 and SY-3 (incorporating known amounts of uranium) and an internal bitumen uranium sample and found that the REE values are consistent with the most stable values and that all BEE, Y and The RSD of Sc is 1% ~ 8.8%. This method can be compared with a well-defined cation exchange separation method.