Primary and secondary organic aerosols in summer 2016 in Beijing - Tang, R.; Wu, Z.; X. Li; Y. Wang; Shang, D.; Xiao, Y.; M. Li; Zeng, L.; Hallquist, M.; Hu, M.; Guo, S. (Atmos. Chem. Phys.Atmos. Chem. Phys., 2018)