1. Department of Biochemistry; Memorial University of Newfoundland; St John's Newfoundland A1C 5X1 Canada
2. Department of Chemistry; Memorial University of Newfoundland; St John's Newfoundland A1C 5X1 Canada
3. Inp-Ensiacet, Chemical Engineering Laboratory 4; University of Toulouse; Allée Emile Monso 31432 Toulouse France
4. Science Branch, Special Projects; Fisheries and Oceans Canada; St John's NL A1C 5X1 Canada