1. ; Department of Chemistry; Saint Mary's University; B3H 3C3 Halifax Nova Scotia Canada
2. Department of Toxicological Chemistry; Institute of Environmental Research and Bioanalysis, Medical Academy; Lódó ul Narutowicza 120A 90-145 Lódó Poland
3. Fisheries Research and Technology Laboratory; Technical University of Noav Scotia; PO Box 1000 B3J 2X4 Halifax Nova Scotia Canada