本法在前文氧化钇中希土杂质的萤光光谱分析基础上利用阳离子交换树脂,乙酸铵为淋洗剂,用分部收集法求出杂质钇、钐和镨的淋洗曲线,然后进行分部收集。所得淋洗液,进行蒸干浓缩,并用萤光X射线光谱法测定。一克试样测定下限为2×10~(-4)%。 Based on the fluorescence spectrum analysis of the rare earth impurities in yttrium oxide, the method uses the cation exchange resin and ammonium acetate as the eluent, and the leaching curves of the impurities yttrium, samarium and praseodymium are obtained by the partial collection method, Department collection. The resulting eluent was evaporated to dryness and concentrated by fluorescence X-ray spectrometry. The lower limit of one gram sample is 2 × 10 ~ (-4)%.