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测定高纯氧化钇中14个稀土杂质时,萃取色层法是一种有效的分离手段,作者继P-507萃取色层法分高纯氧化钇中轻稀土元素(La—Gd)之后,又采用N-263为固定相,硫氰酸铵溶液为流动相,研究了高纯氧化钇中重稀土元素(Tb—Lu)的分离条件。在本文确定条件下,分离周期约2.5小时,富集倍数>8×10~3倍,加入试验的回收率为90—102％,用于光谱测定的相对标准偏差为±7.0—±13.2％,方法简便、准确、快速。仪器:
Determination of 14 rare earth impurities in high-purity yttrium oxide, the extraction chromatography is an effective means of separation, the author following the P-507 extraction chromatography of high-purity yttrium oxide light rare earth elements (La-Gd), and The separation conditions of heavy rare earth elements (Tb-Lu) in high-purity yttrium oxide were studied by using N-263 as the stationary phase and ammonium thiocyanate solution as the mobile phase. Under the conditions determined in this paper, the separation cycle is about 2.5 hours, the enrichment factor is more than 8 × 10 ~ 3 times, the recovery rate is 90-102%, the relative standard deviation for spectrometry is ± 7.0- ± 13.2% Method is simple, accurate and fast. instrument: