Penglin Ye¹, Yuqing Zhang², Duohong Chen³, Xiang Ding⁴, Jun Li⁴, Tao Zhang³, Junqi Wang⁴, Qian Cheng⁴, Hao Jiang⁴, Wei Song⁴, Yubo Ou³, Gan Zhang⁴ and Xinming Wang^4,5, (1)Aerodyne Research Inc., Billerica, MA, United States, (2)Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China, (3)State Environmental Protection Key Laboratory of Regional Air Quality Monitoring, Environmental Monitoring Center of Guangdong Province, Guangzhou, China, (4)State Key Laboratory of Organic Geochemistry and Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China, (5)Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China