1. Zachry Department of Civil and Environmental Engineering, Texas A&M University, College Station, Texas 77843-3136, United States
2. Division of Environment & Sustainability, Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong 999077, China
3. State Environmental Protection Key Laboratory of the Formation and Prevention of Urban Air Pollution Complex, Shanghai Academy of Environmental Sciences, Shanghai 200021, China
4. Department of Chemistry, Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong 999077, China