1. Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902
2. Environmental and Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352
3. Department of Geology, State University of New York at Binghamton, Binghamton, New York 13902
4. Department of Chemistry and Biochemistry, Southern Illinois University, Carbondale, Illinois 62901
5. Department of Physics, Purdue University, West Lafayette, Indiana 47907