Title

In situ Monitoring of Synchrotron X-Ray-Induced Radiolysis Effects on Chromium Species Using X-Ray Absorption Spectroscopy

Abstract

Synchrotron X-ray radiolysis-induced redox in a chromium aqueous solution was monitored using in situ X-ray absorption spectroscopy. The radiolysis in the fluid sample within a specifically designed hydrothermal diamond anvil cell caused the oxidation of Cr(III) to Cr(VI) upon heating from room temperature to 400°C, and reduction of Cr(VI) to Cr(III) at 500°C. The two fitted components of the pre-edge features of the Cr K-edge spectra were used to identify the presence of Cr(VI) in the solution.

Department(s)

Physics, Astronomy, and Materials Science

Document Type

Article

DOI

https://doi.org/10.1007/s10812-017-0474-7

Keywords

chromium, radiolysis, redox, supercritical fluid, X-ray absorption spectroscopy

Publication Date

5-1-2017

Journal Title

Journal of Applied Spectroscopy

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