DETERMINATION OF RARE-EARTH ELEMENTS IN METALLIC LA, PR, ND, GD AND TB BY GLOW-DISCHARGE MASS-SPECTROMETRY

被引：4

作者：

HIROSE, F

ITOH, S

OKOCHI, H

机构：

[1] Natl Research Inst for Metals, Tokyo

来源：

TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN | 1991年 / 77卷 / 04期

关键词：

GLOW DISCHARGE MASS SPECTROMETRY; METALLIC REE MATRICES; DIRECT ANALYSIS OF SOLID SAMPLE; DETERMINATION OF TRACE REES; MG; AL; SI; P; S; CA; FE AND HF;

D O I：

10.2355/tetsutohagane1955.77.4_598

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Trace analysis of rare-earth elements (REEs) in metallic REE matrices (La, Pr, Nd, Gd and Tb) by the glow discharge mass spectrometry was investigated. Optimum operational parameters of the glow discharge which affected directly ion beam intensity were examined. Preburning was performed to remove surface contamination before analysis. Preburn time was about 10 min under discharge conditions. Spectral interferences due to polyatomic species such as oxide, hydride and argide were examined. Then, alternative isotopes are used for analysis except for monoisotopic elements. Low ppba detection limits were obtained. The relative standard deviations of five repetitive measurements were 0.8% approximately 5.0% for 100 ppm level and 40% for less than 1 ppm.

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收藏

页码：598 / 604

页数：7

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