Actinide Speciation at
INE using Synchrotron Radiation
The application of x-ray absorption spectroscopy (XAS) for investigating the interaction of actinides with the geo-/hydrosphere can help advance our basic understanding of actinide speciation (i.e., physico-chemical state of the nuclide). Such information is essential for risk assessment, management, and reduction of hazards associated with the release of radionuclides into the environment. INE has an active, synchrotron-based XAS program to study such processes. The INE-Beamline at ANKA has been built to extend and support these activities. This presentation will provide an overview of selected results from this program will be presented: Investigations to determine structures of U(IV) and U(VI) solution species.