Ting Lei^1,2, Nan Ma^1,3, Juan Hong^1,3, Thomas Tuch², Xin Wang¹, Zhibin Wang⁴, Mira L. Pöhlker⁵, Maofa Ge⁶, Eugene Mikhailov⁷, Thorsten Hoffmann⁸, Ulrich Poeschl¹, Hang Su¹, Alfred Wiedensohler² and Yafang Cheng¹, (1)Max Planck Institute for Chemistry, Multiphase Chemistry Department, Mainz, Germany, (2)Leibniz-Institute for Tropospheric Research, Leipzig, Germany, (3)Jinan University, Institute for Environmental and Climate Research, Guangzhou, China, (4)Reserch Center for Air Pollution and Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China, (5)Max Planck Institute for Chemistry, Multiphase Chemistry and Biogeochemistry Departments, Mainz, Germany, (6)CAS Chinese Academy of Sciences, Beijng, China, (7)Department of Atmospheric Physics, Saint-Petersburg University, St. Petersburg State University, St. Petersburg, Russia, (8)Institute of Inorganic Chemistry and Analytical Chemistry, Johannes Gutenberg University, Mainz, Germany