ATOMIZATION MECHANISMS OF SILICON IN A GRAPHITE-FURNACE ATOMIZER

被引：27

作者：

RADEMEYER, CJ

VERMAAK, I

机构：

[1] Department of Chemistry, University of Pretoria

来源：

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY | 1992年 / 7卷 / 02期

关键词：

GRAPHITE FURNACE ATOMIZER; ELECTROTHERMAL ATOMIC ABSORPTION SPECTROMETRY; ATOMIZATION MECHANISM; SILICON; MOLECULAR ABSORPTION;

D O I：

10.1039/ja9920700347

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An attempt has been made to identify molecular species that are formed during the atomization cycle of Si in electrothermal atomic absorption spectrometry. Clear evidence has been obtained that two molecular species are formed, presumably SiO and SiC2. In order to gain an insight into the reactions whereby these molecular species are formed and Si atoms from these species, the effect on the signal of the addition of O2, CO2, CO and H-2 to the purge gas was investigated. By using the results of these experiments, a mechanism for the atomization of Si in the graphite furnace atomizer is proposed.

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页码：347 / 351

页数：5

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