ISSN:
0049-8246
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Physics
Notes:
The performance of an energy-dispersive x-ray fluorescence (ED-XRF) system for the analysis of silicate rocks was investigated in detail. Data are presented to demonstrate the selection of optimum excitation conditions for the major elements (Na-Fe), analysed on glass beads, and the trace elements (particularly the Rb-Nb group) analysed on powder pellets. Limitations in spectrum analysis due to overlap interferences are discussed and have largely been overcome using x-ray profile fitting software. The results show that when operated under optimum excitation conditions, ED-XRF spectrometry can routinely achieve a high degree of accuracy and precision in the analysis of a wide range of major and trace elements in silicate rocks. For many elements, 2s standard deviations are better than 2% relative. Limits of determination for many trace elements are in the range 4-10 ppm.
Additional Material:
9 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/xrs.1300130103
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