1. School
of Energy and Environment, City University of Hong Kong, Hong Kong, China
2. State
Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory
of Environmental Protection and Resources Utilization, Guangzhou Institute
of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
3. University of Chinese Academy of Sciences, Beijing 100049, China
4. Center
for Excellence in Urban Atmospheric Environment, Institute of Urban
Environment, Chinese Academy of Sciences, Xiamen 361021, China