Determination of Phosphorus in Chlorosilanes) And High Purity Silica By Atomic Absorption Spectrophotometer
作者:
D.C. Parashar,
A.K. Sarkar,
期刊:
Analytical Letters
(Taylor Available online 1984)
卷期:
Volume 17,
issue 11
页码: 1269-1273
ISSN:0003-2719
年代: 1984
DOI:10.1080/00032718408065304
出版商: Taylor & Francis Group
关键词: Phosphoantimonyl molybdate;Silanes;Atomic Absorption Spectrophotometer
数据来源: Taylor
摘要:
Determination of traces of impurities in chloro-silanes and high purity silica are important in the preparation of semiconductor grade silicon. The author have developed an indirect method for the determination of phosphorus in these materials. Phosphorus is extracted as phosphoantimonyl molybdate complex in methyl isobutyl ketone. The concentration of phorphorus is calculated by determining the concentration of antimony by atomic absorption spectrophotometer as antimony and phosphorus are present in 1:1 molar ratio in the complex. The method is selective and enables the determination of 0.1 ppm of phosphorus.
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