ICP-MS/MS测定高纯氧化钇的14种稀土杂质元素  

Determination of 14 rare earth impurity elements in high-purity yttrium oxide by ICP-MS/MS

作　　者：梁玉仪 李兵 孔翔飞[1] 秦文忠 胡振光 LIANG Yuyi;LI Bing;KONG Xiangfei;QIN Wenzhong;HU Zhenguang(School of Chemistry and Biological Engineering,Guilin University of Technology,Guilin 541006,China;China Aluminum Guangxi Nonferrous Rare Earth Development Co.,Ltd.)

机构地区：[1]桂林理工大学化学与生物工程学院,广西桂林541006 [2]中铝广西有色稀土开发有限公司

出　　处：《无机盐工业》2022年第4期165-168,共4页Inorganic Chemicals Industry

基　　金：石墨烯等新材料关键技术研究及产业化示范(2020A01)。

摘　　要：使用三重串联四级杆-电感耦合等离子质谱法(ICP-MS/MS)测定高纯氧化钇的14种稀土杂质元素。在最佳工作条件下,确定了样品的分析模式为TQ-He,对比考察了氦气和氧气作为反应气时对检出限以及等效背景浓度(BEC)的影响,能有限地消除氧化钇基体中产生的多原子离子干扰。选择碰撞模式对干扰的消除,能达到准确测定高纯钇中痕量稀土杂质的目的。实验测得了在氦气模式下,稀土元素的检出限的范围是0.007~0.89μg/L,加标回收率为97.93%~104.86%,相对标准偏差(RSD)为0.78%~3.39%。该方法简单、精密度高,可以满足纯度为99.999%~99.9999%及以上的高纯氧化钇中14种稀土杂质元素的直接测定。Fourteen rare earth impurities in high purity yttrium oxide were determined by series triple quadrupole inductively coupled plasma mass spectrometry(ICP-MS/MS).Under the best working conditions,the analytical mode of the sample was determined as the mode of TQ-He.The effect of He and O_(2) as reaction gases on the detection limit and the equivalent background concentration(BEC)was investigated,which could eliminate the interference of polyatomic ions that produced by yttrium oxide matrix more effectively.The interference of collision mode could be eliminated to achieve the purpose of accurate determination of trace rare earth impurities in high purity yttrium.In the helium mode,the detection limit of rare earth elements was between 0.007μg/L and 0.89μg/L in experiment.The recovery was 97.93%~104.86%and the relative standard deviation was 0.78%~3.39%.The method had the advantages of simplicity and high precision,which could meet the direct determination of 14 rare earth impurity elements in high purity yttrium oxide with a purity of 99.999%~99.9999%and above.

关 键 词：ICP-MS/MS 高纯氧化钇 稀土杂质 干扰的消除 

分 类 号：TQ133.23[化学工程—无机化工]