1. Wildlife and Landscape Directorate,
Science and Technology Branch, Environment Canada, National Wildlife Research Centre, Carleton University, Ottawa,
ON, K1A 0H3, Canada
2. Department
of Chemistry, Carleton University, Ottawa,
ON, K1S 5B6, Canada
3. Department
of Chemistry, University of Guelph, Guelph,
ON, N1G 2W1, Canada
4. Wellington Laboratories, Research Division, Guelph,
ON, N1G 3M5, Canada