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本文报道了用感耦等离子体质谱法（ＩＣＰ－ＭＳ）测定高纯氧化镥中１４个稀土杂质的方法。镥基体对测定元素无谱线干扰，但对测定信号产生显著抑制作用。加入内标后有效地补偿了这种基体抑制效应，方法检出限为０．００５～０．０３ｎｇ／ｍＬ。样品加标为０．０１μｇ时，回收率为９０％～１０３％。精密度（ＲＳＤ）为１．４％～４．２％。方法简单，不需分离富集，样品消耗量少（１０ｍｇ）。１４个稀土元素的总测定下限（１０）可达０．５８μｇ／ｇ可直接测定纯度为９９．９％～９９．９９９９％的氧化镥中稀土杂质。
In this paper, a method for the determination of 14 rare earth impurities in high-purity lutetium oxide by inductively-coupled plasma mass spectrometry (ICP-MS) has been reported.镥 The matrix has no spectral interference on the measured element, but has a significant inhibitory effect on the measured signal. After adding the internal standard, this substrate inhibition effect was effectively compensated. The detection limit was 0.005 ~ 0.03 ng / mL. When the sample is spiked with 0.01μg, the recovery is 90% ~ 103%. The precision (RSD) was 1.4% ~ 4.2%. The method is simple, without separation and enrichment, sample consumption less (10mg). 14 rare earth elements of the total determination of the lower limit (10) up to 0.58μg / g can be directly measured purity of 99.9% to 99.9999% rare earth oxide oxide.