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Calibration for ED-XRF profiling of coal cores for the Itrax Core Scanner

Published online by Cambridge University Press:  20 October 2014

Sarah J. Kelloway ,
Colin R. Ward ,
Christopher E. Marjo ,
Irene E. Wainwright  and
David R. Cohen
Sarah J. Kelloway*
Affiliation:
Mark Wainwright Analytical Centre, University of New South Wales, Sydney, NSW 2052, Australia
Colin R. Ward
Affiliation:
School of Biological Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia
Christopher E. Marjo
Affiliation:
Mark Wainwright Analytical Centre, University of New South Wales, Sydney, NSW 2052, Australia
Irene E. Wainwright
Affiliation:
Mark Wainwright Analytical Centre, University of New South Wales, Sydney, NSW 2052, Australia
David R. Cohen
Affiliation:
School of Biological Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia
*
a)Author to whom correspondence should be addressed. Electronic mail: sarah.kelloway@unsw.edu.au
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Abstract

Recent developments in instrumentation mean that chemical analysis of large drill cores taken for geological purposes can be performed rapidly at sub-millimetre scales using core scanners equipped with energy-dispersive X-ray fluorescence spectrometers. The present study describes the development of a calibration for the Itrax Core Scanner (Cox Analytical, Sweden), intended for whole cores of coal-seam sections, without the need for sample preparation. The calibration was developed for key major elements (Al, Si, P, S, K, Ca, Ti, and Fe) based on pressed pellets of reference coals, allowing semi-quantitative and, at times, quantitative analyses. The influence of core curvature and surface roughness compared with an ideal flat-surface was also examined using model samples, and their influence on the apparent sample composition evaluated.

Keywords

coaldrill coreschemical analysiscore scanningX-ray fluorescence spectrometry
Type
Technical Articles
Information
Powder Diffraction , Volume 29 , Issue S1 , December 2014 , pp. S28 - S34
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Copyright
Copyright © International Centre for Diffraction Data 2014 

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