Mottram, L.M., Cafferkey, S., Mason, A.R. et al. (5 more authors) (2020) A feasibility investigation of speciation by Fe K-edge XANES using a laboratory X-ray absorption spectrometer. Journal of Geosciences, 65 (1). pp. 27-35. ISSN 1802-6222
Abstract
We demonstrate effective speciation of Fe in model compounds from analysis of the weak pre-edge features in Fe K-edge XANES spectra, with a commercially available laboratory X-ray spectrometer, using a spherically bent crystal analyser and a low power X-ray tube, in Rowland circle geometry. Direct comparison with XANES data acquired from a third generation synchrotron bending magnet beamline, using the same specimens, validated quantitative agreement in determination of the total integrated intensity and centroid position of the pre-edge feature, which are a probe of the electronic configuration and symmetry of the absorber atom, and hence oxidation state and co-ordination number. This work opens the door to rapid and routine speciation studies of Fe by laboratory XANES, even for materials with relatively dilute absorber concentration of only a few mol. %.
Metadata
Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 Czech Geological Society. | ||||||||||
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Institution: | The University of Sheffield | ||||||||||
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) | ||||||||||
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Depositing User: | Symplectic Sheffield | ||||||||||
Date Deposited: | 09 Jul 2020 14:04 | ||||||||||
Last Modified: | 09 Jul 2020 14:04 | ||||||||||
Status: | Published | ||||||||||
Publisher: | Czech Geological Society | ||||||||||
Refereed: | Yes | ||||||||||
Identification Number: | https://doi.org/10.3190/jgeosci.299 |