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In Situ Actinide X-ray Absorption Spectroelectrochemistry

Published online by Cambridge University Press:  01 February 2011

Mark R. Antonio ,
Ming-Hsi Chiang ,
Clayton W. Williams  and
L. Soderholm
Mark R. Antonio
Affiliation:
Chemistry Division, Argonne National Laboratory, Argonne, IL 60439–4831, U.S.A.
Ming-Hsi Chiang
Affiliation:
Chemistry Division, Argonne National Laboratory, Argonne, IL 60439–4831, U.S.A.
Clayton W. Williams
Affiliation:
Chemistry Division, Argonne National Laboratory, Argonne, IL 60439–4831, U.S.A.
L. Soderholm
Affiliation:
Chemistry Division, Argonne National Laboratory, Argonne, IL 60439–4831, U.S.A.
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Abstract

By using electrochemical techniques in simultaneous combination with EXAFS, we can stabilize a targeted charge state of a solution complex and probe the coordination of selected actinide (An) ions. In addition, we can acquire sufficient XANES over a range of controlled electrochemical potentials, in the vicinity of a redox couple, to perform a Nernst analysis. The prospect of this technique to provide here-to-fore unattainable information is demonstrated through examples of Np, Pu, and Bk speciation in solution.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 802: Symposium DD – Actinides - Basic Science, Applications, and Technology , 2003 , DD4.5
Copyright
Copyright © Materials Research Society 2004

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References

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