NUCLSunday, March 23, 2003

8:30 AM-12:00 PM Convention Center -- Room 390,Oral
Synchrotron-Based Analytical Techniques for Nuclear and Environmental Sciences
Inorganic Surface-Solution Interactions
Presidings:Shelly Kelly
Jeffrey G. Catalano
Organizer:Martine C. Duff
8:30 AM Introductory Remarks
8:40 AM 1XAFS study of americium sorbed on groundwater colloids
Claude André Degueldre, Donald T. Reed, Arthur J. Kropf, Andreas Laube
9:00 AM 2Actinyl: From solution to model mineral surfaces
Christophe Den Auwer, Eric Simoni, Romuald Drot, Marie Christine Charbonnel, Philippe Moisy
9:20 AM 3EXAFS studies of the interaction of Pu(VI)O22+ with goethite
Richard E. Wilson, Dawn A. Shaughnessy, Corwin H. Booth, Yung-Jin Hu, Philip A. Wilk, Heino Nitsche
9:40 AM 4Characterization of actinide removal mechanisms for high-level waste treatment: Application of XAFS spectroscopic techniques
Martine C. Duff, Douglas B. Hunter, David T. Hobbs, Mark J. Barnes, Samuel D. Fink
10:00 AM 5Pu(VI) reduction by Fe and Al metal in the presence of alpha radiolysis by products in brine solutions
Mei Ding, Patricia Paviet-Hartmann, Steven D. Conradson, Phill Palmer, James L. Conca, Thomas Hartmann
10:20 AM Intermission
10:40 AM 6Grazing incidence XAFS measurements of metal-cation sorption onto mineral surfaces
Melissa A. Denecke, Joerg Rothe, Kathy Dardenne, Patric Lindqvist-Reis
11:00 AM 7Sorption mechanisms of radionuclides on clay-mineral surfaces as determined by polarized X-ray absorption spectroscopy
Rainer Daehn, Andre Scheidegger, Alain Manceau, Daniel Grolimund
11:20 AM 8Metal sorption onto hydrated iron oxides in anoxic environments: Role of Fe(II) ions, reaction time, and temperature
Paras Trivedi, Donald Sparks, James A. Dyer, Noel Scrivner, Kaumudi Pandya
11:40 AM 9Phosphate speciation on calcite and gibbsite surfaces: A combined X-ray absorption spectroscopy and solid-state NMR investigation
Stefan Hunger, Donald L. Sparks

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The 225th ACS National Meeting, New Orleans, LA, March 23-27, 2003