1. Science and Technology Branch, Environment Canada, 4905 Dufferin Street, Toronto, Ontario, M3H 5T4, Canada, Laboratoire de PhysicoToxicochimie des Systèmes Naturels, Equipe Périgourdine de Chimie Appliquée, Site universitaire, 24019 Périgueux cedex, France, Science and Technology Branch, Environment Canada, 2365 Albert Street, Park Plaza, Regina, Saskatchewan, S4P 4K1, Canada, Science and Technology Branch, Environment Canada, 105 rue McGill, 7e étage (Youville), Montreal, Quebec, H2Y 2E7, Canada,...