1. Department of Chemistry, University of Wisconsin − Madison, Madison, Wisconsin 53706, United States
2. Center for Aerosol Science and Engineering, Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
3. Institute of Technology and Environmental Sciences (IITAA), University of the Azores, Angra do Heroísmo 9700-042, Portugal
4. Environmental and Climate Sciences Department, Brookhaven National Laboratory, Upton, New York 11973, United States