中华医学超声杂志

应用化学 ›› 1993, Vol. 0 ›› Issue (1): 92-94.

• 研究简报 • 上一篇    下一篇

高纯金属镨的电感耦合等离子体原子发射光谱分析

袁甫, 綦文娣   

  1. 中国科学院长春应用化学研究所 130022 长春
  • 收稿日期:1991-12-23 修回日期:1992-03-19 出版日期:1993-02-10 发布日期:1993-02-10

DETERMINATION OF TRACE RARE EARTH IN HIGH PURE METALLIC PRASEODYMIUM BY INDUCTIVELY COUPLED PLASMA ATOMIC EMISSION SPECTROMETRY

Yuan Fu, Qi Wendi   

  1. Changchun Institute of Applied Chemistry, Academia Sinica, 130022 Changchun
  • Received:1991-12-23 Revised:1992-03-19 Published:1993-02-10 Online:1993-02-10

PDF

372

被引次数

4

摘要： 某些稀土杂质对高纯金属镨的冶炼与性质有很大影响,因此需建立准确可靠的分析方法。镨的ICP光谱极为复杂,本文除用乙醇预去溶进样方式以提高分析灵敏度外,还研究了基体用量和稀土元素间的光谱干扰和校正方法。得出当样品中稀土总浓度为5mg/mL时,可直接同时测定纯度>99.99%的高纯金属镨中的镧、铈、钕、钐和钇,测定下限分别为镧、钕和钐0.002%,铈0.003%,钇0.0005%;其相对标准偏差分别为2.2%,6.2%,3.6%,1.4%和1.2%.

关键词: 镨, 电感耦合等离子体, 光谱干扰, 去溶

Abstract: A spectrophotometric method for the direct simultaneous determination of five trace rare earth in high pure metallic praseodymium is described. The ethanol sample solution was introduced into the plasma for desolvation. The effect of matrix concentration on detection limits,and the calculation and correction of spectral interferences in ICP-AES have been investigated. For the sample solution containing 5 mg/mL of Pr,the limits of determination were 0.002% for La,Nd and Sm,0.003 for Ceand 0.0005% for Y. The accuracies of the determinations were satisfactory and the relative standard deviations were in the range of 1.2～6.2%.

Key words: praseodymium, inductively coupled plasma, spectral interference, desolvation

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