Analysis of silicon carbide powder by ETV-ICP-AES

Gyula Záray, Franz Leis, Tibor Kántor, Jürgen Hassler, Günther Tölg

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A direct "tandem" atomic spectroscopic method for the determination of Ca, Fe and Ti impurities in SiC powders with various grain size (0.78<d50<48.5 μm) has been developed. The method is based on high temperature halogenation of the sample with Freon 12 in a graphite furnace and ICP-AES detection of the evolved sample components. The concentration of the matrix element silicon in the ICP increased to a maximum value after 10s of heating, independent of the grain size of the powder samples. For performing a calibration with standard solutions a finegrained, purified SiC-powder was evaporated simultaneously with the solution residues. The calibration curves produced using this analyte-addition technique and using within-laboratory solid standards were identical within experimental error.

Original languageEnglish
Pages (from-to)1042-1046
Number of pages5
JournalFresenius' Journal of Analytical Chemistry
Issue number12
Publication statusPublished - Dec 1 1993


ASJC Scopus subject areas

  • Biochemistry

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