目前,高纯氧化钇中稀土杂质的测定已有很多资料报导,但分析的灵敏度均不高,已发表的工作中大部分采用化学-光谱法或在气氛抑制氰带条件下测定高纯氧化钇中稀土杂质,但由于时间长,操作复杂,成本高等原因而限制了在某些单位的推广。我们对高纯氧化钇中稀土杂质的测定采用直流电弧粉末法,碳粉∶试样=1∶1,PGS-2平面光栅摄谱仪摄谱,灵敏度Nd、 At present, the determination of rare earth impurities in high-purity yttrium oxide has been reported in a great deal of data, but the sensitivity of the analysis is not high. Most of the published work uses chemical-spectroscopy or the determination of high-purity yttrium oxide In the rare earth impurities, but due to the long time, complex operation, high cost and other reasons limited the promotion in some units. We measured the rare earth impurities in high-purity yttrium oxide by DC arc powder method, carbon powder: sample = 1: 1, PGS-2 planar grating spectrograph, sensitivity Nd,