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本文提出了用高氯酸溶液中的高阶导数光度法直接测定稀土-铝合金中铈、镨、钕、再用差减法求镧的方法。分析结果与X-荧光光谱法结果一致。本方法具有快速、简便和准确的优点。
In this paper, the direct determination of cerium, praseodymium and neodymium in rare earth-aluminum alloy by high-order derivative spectrophotometry in perchloric acid solution is proposed. The analytical results are consistent with the results of X-ray fluorescence spectrometry. This method is fast, easy and accurate.