Dr. Choppin serves as a consultant to Lawrence Livermore National Laboratory, Argonne National Laboratory, Los Alamos National Laboratory, Sandia National Laboratories, as well as several private laboratories.  He has received two honorary degrees, D.Sc. (Loyola University) and DTC (Chalmers University, Sweden).  His major research interests are inorganic and nuclear chemistry with emphasis on the lanthanide and actinide elements.  Potentiometry, calorimetry, NMR, and optical spectroscopy are among the methods used in his laboratory to study the thermodynamics and kinetics of complexation and redox behavior of these elements.  A major focus of his laboratory is on the separation science of actinides and the environmental speciation of actinides by inorganic and organic ligands.

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