1. School of Public and Environmental Affairs and Department of Chemistry, Indiana University, Bloomington, Indiana 47405, Centre for Atmospheric Research Experiments, Atmospheric Environment Service, RR #1, Egbert, Ontario, Canada L0L 1N0, National Water Research Institute, Canada Centre for Inland Waters, P.O. Box 5050, Burlington, Ontario, Canada L7R 4A6, Environment Canada/CCIW, 867 Lakeshore Road, Burlington, Ontario, Canada L7R 4A6, Atmospheric Environment Service, 4905 Dufferin Street, Downsview,...