Changgeng Liu

TL;DR: In this article, a flow tube reactor coupled with a vacuum ultraviolet photoionization aerosol time-of-flight mass spectrometer (VUV-ATOFMS) was used to investigate heterogeneous reactions of polycyclicaromatichydrocarbons (PAHs) and their derivatives on azelaic acid particles with NO3 radicals.

TL;DR: Heterogeneous kinetics of particulate syringaldehyde, vanillic acid, and coniferyl aldehyde with NO₃ radicals is investigated with a mixed-phase relative rate method to shed light on the chemical behaviors of methoxyphenols at night.

TL;DR: Effective rate constants for heterogeneous reactions of NO(3) radicals with five 4-ring PAHs adsorbed on suspended azelaic acid particles are investigated by a mixed-phase relative rate method with gas-phase isoprene as the reference substance.

TL;DR: In this article, the effects of SO2 and NH3 on secondary aerosol formation from unburned gasoline vapor were investigated in a 30m 3 indoor smog chamber, and it was found that an increase in SO2 concentrations (0.151 and 0.200ppb, respectively) could linearly promote the formation of SA, which could be enhanced by a ≥ 1.6-2.6 and ≥ 2.5, respectively.

TL;DR: Under typical ambient conditions, high concentrations of VOC precursors might contribute to sustained organic aerosol growth and long duration haze events in Beijing.