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

Abstract

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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Jiang Zucheng, Chen Hao, Zhang Shuxiu . Some Problems in the Determination of Trace Rare Earth Impurities in Complicated Rare Earth Matrix by Using a ICP Spectrometer[J]. Chem. J. Chinese Universities, 1990, 11(11): 1283.

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

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