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关于高纯氧化铒中微量非稀土元素光谱测定,目前国内还未见报导,国外已有采用载体分馏法测定氧化铒中铁、钙、锰、镍、钴、铬、铜和硅等8个非稀土元素的报导,测定下限为0.2—76ppm。载体分馏法具有检出限较低、操作简便、经济等优点。本试验采用正交设计选择了最佳分析条件,确定:氯化钠与试样按5:95研匀,称取50毫克装入孔径4毫米、孔深7毫米的石墨杯型电极孔穴中作阳极,用12安直流电弧激发。一次摄谱完成钴、钒、铝、锑、铜、锡、铬、铋、镍、镉、锰、铁、铅和镁等14个非稀土元素的测定。方法适用于高纯氧化铒中非稀土元素的测定,测定下限为0.43—10ppm,变异系数为5.1—17%。
There are no reports on trace non-rare earth elements in high-purity erbium oxide. There are no foreign reports on the determination of trace amounts of non-rare-earth elements in erbium oxide, such as iron, calcium, manganese, nickel, cobalt, chromium, copper and silicon Elements of the report, the lower limit of determination of 0.2-76ppm. The carrier fractionation method has the advantages of lower detection limit, simple operation, economy and so on. In this experiment, the orthogonal design was used to select the best analysis conditions, and it was confirmed that sodium chloride and the sample were homogenized according to 5:95, and 50 mg was weighed into a graphite cup-type electrode hole of 4 mm in pore diameter and 7 mm in depth Anode, with 12 DC DC arc excitation. A complete spectrum of 14 non-rare earth elements such as cobalt, vanadium, aluminum, antimony, copper, tin, chromium, bismuth, nickel, cadmium, manganese, iron, lead and magnesium was determined. The method is suitable for the determination of non-rare earth elements in high-purity erbium oxide with a lower limit of 0.43-10ppm and a coefficient of variation of 5.1-17%.