1. Molecular and Environmental Sciences Group, Department of Geological Sciences, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E2, Canada
2. Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Stanford University, Menlo Park, California 94025, United States
3. Chevron Energy Technology Company, Richmond, California 94802, United States
4. Simon Scientific, P.O. Box 71024, Richmond, California 94807, United States
5. Department of Chemistry, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5C9, Canada