高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (11): 1283.

• 研究简报 • 上一篇    下一篇

光谱复杂的稀土基体中稀土杂质ICP光谱测定的一些问题

江祖成, 陈浩, 张书秀   

  1. 武汉大学化学系, 430072
  • 收稿日期:1989-02-21 出版日期:1990-11-24 发布日期:1990-11-24
  • 通讯作者: 江祖成

Some Problems in the Determination of Trace Rare Earth Impurities in Complicated Rare Earth Matrix by Using a ICP Spectrometer

Jiang Zucheng, Chen Hao, Zhang Shuxiu   

  1. Department of Chemistry, Wuhan University, Wuhan, 430072
  • Received:1989-02-21 Online:1990-11-24 Published:1990-11-24

摘要: ICP激发光源以其独特的功能使ICP/AES技术在稀土分析中的应用日益广泛,在一定程度上取代了经典的直流电弧光谱法[1~4],但应指出,由于常规雾化器的低雾化效率(≤5%)和试样的高倍稀释,ICP/AES技术的实际检测能力的改善并不明显。

关键词: 稀土元素, 氧化铽, 等离子体, JY38顺序扫描式等离子体光谱仪

Abstract: Amethod for the determination of 14 rare earth impurities in Tb4O7 with a purity of 99. 9% by using a JY38 sequential ICPspectrometer is described. The spectral interferences of the matrix were investigated in detail. Asimple experimental method is proposed to estimate the optimum concentration of matrix in solution. In the presence of 1 mg/mLof matrix (Tb), the detection limit for the anatytes is between 3.0×10-2 and 3. 1×10-4 μg/mL (in solution) and 30 and 0. 31 μg/g(in solid), respectively. The relative standard deviations are in the range form 0. 7% to 4.3% with the exception of Ce.

Key words: Rare earth elements, Terbium oxide, Plasma, JY38 sequential ICP spectrometer

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