1. Department of Chemistry; The Pennsylvania State University; 104 Chemistry Building, University Park PA 16802 USA
2. Ontario Ministry of the Environment; 125 Resources Road Toronto Ontario Canada M9P 3 V6
3. Department of Chemistry; McMaster University; 1280 Main Street West Hamilton Ontario Canada L8S 4M1
4. Waters Corporation; Stamford Avenue, Altrincham Road Wilmslow SK9 4AX UK
5. Leco Corporation; 3000 Lakeview Avenue St. Joseph MI 49085 USA
6. Waters Corporation; 34 Maple Street Milford MA 01757 USA
7. Department of Chemistry; University of Toronto; 80 St. George Street Toronto Ontario Canada M5S 3H6
8. Department of Biochemistry and Molecular Biology; The Pennsylvania State University, 107 Althouse Laboratory, University Park; PA 16802 USA