1. Department of Chemistry, University of Toronto, Toronto, ON M5S 3H6, Canada
2. Ontario Ministry of the Environment, Conservation and Parks (MECP), Toronto, ON M7A 1N3, Canada
3. Centre de recherche en toxicologie de l’environnement (TOXEN), Département des sciences biologiques, Université du Québec à Montréal, P.O. Box 8888, Succursale Centre-ville, Montreal, QC H3C 3P8, Canada
4. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, University of Chinese Academy of Sciences, Chinese Academy of Science, P.O. Box 2871, Beijing 100085, China
5. School of the Environment, University of Toronto, Toronto, ON M5S 3H6, Canada