高纯氧化钪中痕量稀土元素的电感耦合等离子体原子发射光谱分析和稀土元素间的光谱干扰及其校正  

Determination of Trace Rare Earth Impurities in High Purity Scandium Oxide by luductively Coupled Plasma-Atomic Emission Spectrometry and Correction of Spectral Interferences

作　　者：袁甫[1] 綦文娣[1] 

机构地区：[1]中国科学院长春应用化学研究所,长春130022

出　　处：《分析化学》1991年第10期1158-1161,共4页Chinese Journal of Analytical Chemistry

摘　　要：本文提出了用 ICP-AES 直接同时测定高纯氧化钪中15个痕量稀士元素的新方法。用PGS-2光栅光谱仪,Plasma Therm ICP-5000D 光源系统,乙醇预去溶进样方式,直接同时测定纯度为99.995%的高纯氧化钪中15个痕量稀土杂质元素,并讨论了稀土元素间的干扰及某些元素的光谱干扰的校正。当样品溶液中稀土总浓度为5mg/ml:时,测定下限为镧、钆、钬和铥0.0002%,镨、钕、铽和镥0.0004%,铕、镝、铒和钇0.0001%、镱0.00004%,铈和钐0.001%。其相对标准偏差为1.7～8.2%。Inductively eoupled plasma-atomic emission spectrometry was applied succe- ssfully to the direct simultaneous determination of 15 rare earth impurities in high purity Se_2O_3.The sample solutinos containing ethanol was introduced into the plasma with desol- vation.The calculation and correction for spectral interferences in ICP-AES have been described.For the sample solution containing 5 me/ml of Sc_2O_3,determination limits were 0.0002% for La_2O_3,Gd_2O_3,Ho_2O_3 and Tm_2O_3,0.0004% for Pr_6O_(11),Nd_2O_3,Tb_4O_7 and Lu_2O_3,0,001% for Eu_2O_3,Dy_2O_3,Er_2O_3 and Y_2O_3,0.0004% for Yb_2O_3,0.0001% for CoO_2 and Sm_2O_3.

关 键 词：ICP-AES 氧化钪 分析 光谱干扰 

分 类 号：O613.321[理学—无机化学]