Advanced 2D XRF imaging of uranium oxidation states using HERFD at the U M4 edge

Elena F. Bazarkina; Kimberly V. Lau; Anthony Chappaz; Evgeny Bastrakov; Barbara Etschmann; Joël Brugger; Madeline Marshall; Frances M. Meyer; Christopher J. Boreham; Lucia Amidani; Kristina O. Kvashnina

doi:10.1039/D4CC06211F

Advanced 2D XRF imaging of uranium oxidation states using HERFD at the U M₄ edge†

Elena F. Bazarkina,^ab Kimberly V. Lau,

^c Anthony Chappaz,

^d Evgeny Bastrakov,

^e Barbara Etschmann,

^f Joël Brugger,

^f Madeline Marshall,^g Frances M. Meyer,^c Christopher J. Boreham,^e Lucia Amidani

^ab and Kristina O. Kvashnina

*^ab

Author affiliations

* Corresponding authors

^a Institute of Resource Ecology, Helmholtz Zentrum Dresden-Rossendorf (HZDR), PO Box 510119, 01314 Dresden, Germany
E-mail: kristina.kvashnina@esrf.fr

^b The Rossendorf Beamline at ESRF, The European Synchrotron, 38043 Grenoble Cedex 9, France

^c Dept of Geosciences and the Earth and Environmental Systems Institute, Penn State University, University Park, PA 16802, USA

^d STARLAB, Department of Earth and Atmospheric Sciences, Central Michigan University, 17 MI 48859, USA

^e Geoscience Australia, GPO Box 378, Canberra, ACT 2601, Australia

^f School of Earth Atmosphere and Environment, Monash University, Clayton, VIC 3800, Australia

^g Department of Earth and Environment, Albion College, Albion, MI 49224, USA

Abstract

Uranium is found in various types of rocks. HERFD-XRF imaging at the U M₄ edge is a novel non-destructive technique that visualizes the distribution of U(IV), (V), and (VI) oxidation states at concentration levels ranging from ppm to wt%, offering unprecedented insights into uranium habitat and valence.

This article is part of the themed collections: Chemical Communications HOT articles 2025 and Chemistry for a Sustainable World – Celebrating Our Community Tackling Global Challenges

Chemical Communications

Advanced 2D XRF imaging of uranium oxidation states using HERFD at the U M₄ edge†

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Advanced 2D XRF imaging of uranium oxidation states using HERFD at the U M₄ edge

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