Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-26T07:46:44.341Z Has data issue: false hasContentIssue false
  • English
  • Français

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
Get access Rights & Permissions [Opens in a new window]

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
Check for updates
Copyright
Copyright © International Centre for Diffraction Data 2014 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bryers, R. W. (1996). “Fireside slagging, fouling and high-temperature corrosion of heat transfer surface due to impurities in steam-raising coals,” Prog. Energ. Combust. Sci. 22, 29–210.Google Scholar
Creelman, R. A., Ward, C. R., Schumacher, G., and Juniper, L. (2013). “Relation between coal mineral matter and deposit mineralogy in pf furnaces,” Energ. Fuels 27, 5714–5724.Google Scholar
Croudace, I. W. and Rothwell, R. G. (2010). “Micro-XRF sediment core scanners: important new tools for the environmental and earth sciences,” Spectrosc. Europe 22, 6–13.Google Scholar
Croudace, I. W., Rindby, A., and Rothwell, R. G. (2006). “ITRAX: description and evaluation of a new multi-function X-ray core scanner,” in New Techniques in Sediment Core Analysis, edited by Rothwell, R. G., (Geological Society, London), Geological Society Special Publication, Vol. 267, pp. 51–63.Google Scholar
Golab, A., Ward, C. R., Permana, A., Lennox, P., and Botha, P. (2013). “High-resolution three-dimensional imaging of coal using microfocus X-ray computed tomography, with special reference to modes of mineral occurrence,” Int. J. Coal Geol. 113, 97–108.Google Scholar
Gunnarson, B. E., Linderholm, H. W., and Moberg, A. (2011). “Improving a tree-ring reconstruction from west-central Scandinavia: 900 years of warm-season temperatures,” Clim. Dyn. 36, 97–108.Google Scholar
Kelloway, S. J., Ward, C. R., Marjo, C. E., Wainwright, I. E., and Cohen, D. R. (2014). “Quantitative chemical profiling of coal using core-scanning X-ray fluorescence techniques,” Int. J. Coal Geol. 128–129, 55–67.CrossRefGoogle Scholar
Nilsen, O., Fjellvåg, H., and Kjekshus, A. (2003). “Growth of manganese oxide thin films by atomic layer deposition,” Thin Solid Films 444, 44–51.Google Scholar
Ring, E. J. and Hansen, R. G. (1984). The Preparation of Three South African Coals for use as Reference Materials (Report M169). Council for Mineral Technology. pp. 130.Google Scholar
Standards Australia (1993). “Guide to the technical evaluation of higher rank coal deposits,” in Australian Standard 2519, (Standards Australia, Sydney), pp. 60.Google Scholar
Standards Australia (1999). “Coal and coke – Analysis and testing: higher rank coal ash and coke ash – Major and minor elements – Wavelength dispersive X-ray fluorescence spectrometric method,” in Australian Standard 1038.14.3, (Standards Australia, Sydney), pp. 24.Google Scholar
Ward, C. R. (2002). “Analysis and significance of mineral matter in coal seams,” Int. J. Coal Geol. 50, 135–168.CrossRefGoogle Scholar