Online gas- and particle-phase measurements of organosulfates, organosulfonates and nitrooxy organosulfates in Beijing utilizing a FIGAERO ToF-CIMS - Le Breton, M.; Wang, Y. J.; Hallquist, M.; Pathak, R. K.; Zheng, J.; Yang, Y.; Shang, D.; Glasius, M.; Bannan, T. J.; Q. Liu; Chan, C. K.; Percival, C. J.; et al. (Atmospheric Chemistry and Physics, 2018)