1. Division of Engineering
and
Applied Science, California Institute of Technology, Pasadena, California 91125, United States
2. Division of Chemistry and Chemical
Engineering, California Institute of Technology, Pasadena, California 91125, United States
3. School of Chemical and Biomolecular
Engineering and School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, Georgia 30332,
United States
4. Aerodyne Research, Inc., Billerica, Massachussets 01821, United States
5. Air Pollution Research Center,
Department of Environmental Sciences and Environmental Toxicology
Graduate Program, University of California, Riverside, California 92521, United States