1 Institute of Mass Spectrometry and Atmospheric Environment, Jinan University, Guangzhou 510632, China. Electronic address: [email protected].
2 State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China. Electronic address: [email protected].
3 School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China; School of Environmental Science and Engineering, Fudan University, Shanghai 200433, China; Atmospheric Chemistry Department (ACD), Leibniz-Institute for Tropospheric Research (TROPOS), Permoserstr. 15, 04318 Leipzig, Germany.