1. School of Chemistry, Environmental, and Geosciences, Lake Superior State University, 650 W. Easterday Avenue, Sault Ste. Marie, Michigan 49783, United States
2. Lumigen Instrument Center, Wayne State University, A. Paul Schaap Chemistry Building, 5101 Cass Avenue, Detroit, Michigan 48202, United States
3. JEOL USA, 11 Dearborn Road, Peabody, Massachusetts 01960, United States