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XRF analysis of high gain-on-ignition samples by fusion method using fundamental-parameter method

Published online by Cambridge University Press:  05 June 2013

Mitsuru Watanabe ,
Hisashi Inoue ,
Yasujiro Yamada ,
Michael Feeney ,
Laura Oelofse  and
Yoshiyuki Kataoka
Mitsuru Watanabe*
Affiliation:
Rigaku Corporation, 14-8 Akaoji, Takatsuki, Osaka 569-1146, Japan
Hisashi Inoue
Affiliation:
Rigaku Corporation, 14-8 Akaoji, Takatsuki, Osaka 569-1146, Japan
Yasujiro Yamada
Affiliation:
Rigaku Corporation, 14-8 Akaoji, Takatsuki, Osaka 569-1146, Japan
Michael Feeney
Affiliation:
Rigaku Americas Corporation, 9009 New Trails Drive, The Woodlands, Texas 77381
Laura Oelofse
Affiliation:
Rigaku Americas Corporation, 9009 New Trails Drive, The Woodlands, Texas 77381
Yoshiyuki Kataoka
Affiliation:
Rigaku Corporation, 14-8 Akaoji, Takatsuki, Osaka 569-1146, Japan
*
a)Author to whom correspondence should be addressed. Electronic mail: [email protected]
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Abstract

Fusion bead method produces homogeneous samples and is suitable for analysis using fundamental-parameter (FP) method in XRF. This report describes an FP method for analysis of non-oxide samples such as metals made into fusion beads. During the fusion process, all non-oxide elements in the sample are oxidized and gain-on-ignition (GOI) occurs. Volatile elements such as carbon do not remain in the sample as a result of fusion. This process is known as loss-on-ignition (LOI). To obtain reliable analysis results of fusion beads with the FP method, weight changes as a result of LOI and GOI must be reflected accurately in software calculation. The newly developed FP method, which takes these weight changes and dilution ratios into consideration, was able to yield accurate analysis results for ferroalloys FeSi, FeMn, and SiMn, some of which have high carbon content. This method is also applicable for sulfides and carbides.

Keywords

XRFfusion bead methodfundamental-parameter methodGOILOIferroalloys
Type
Technical Articles
Information
Powder Diffraction , Volume 28 , Issue 2 , June 2013 , pp. 132 - 136
Copyright
Copyright © International Centre for Diffraction Data 2013 

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References

ISO9516-1:2003(E) (2003). Iron Ores – Determination of Various Elements by X-ray Fluorescence Spectrometry - Part I: Comprehensive Procedure.Google Scholar
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Homma, H., Inoue, H., Feeney, M., Oelofse, L. and Kataoka, Y. (2012). “Strategy of fusion bead correction in XRF analysis of powders,” Adv. X-Ray Anal. 55, 242–251.Google Scholar