Calibration for ED-XRF profiling of coal cores for the Itrax Core Scanner
Calibration for ED-XRF profiling of coal cores for the Itrax Core Scanner
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DOI：
10.1017/s088571561400089x
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发表时间：
2014-10
影响因子：
0.5
通讯作者：
S. Kelloway;C. Ward;C. Marjo;I. Wainwright;D. Cohen
中科院分区：
文献类型：
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作者：
S. Kelloway;C. Ward;C. Marjo;I. Wainwright;D. Cohen
仪器仪表的最新发展意味着用于地质目的的大型岩心的化学分析可以使用配备能量色散x射线荧光光谱仪的岩心扫描仪在亚毫米尺度上快速进行。本研究描述了Itrax岩心扫描仪（Cox Analytical, Sweden）的校准开发，该扫描仪用于煤层剖面的整个岩心，无需样品制备。校准开发的关键主要元素（Al, Si， P， S， K, Ca， Ti和Fe）基于压小球的参考煤，允许半定量，有时，定量分析。利用模型样品考察了岩心曲率和表面粗糙度对理想平面表面的影响，并评估了它们对表观样品组成的影响。
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.