Effect of illumination intensity and light application time on secondary organic aerosol formation from the photooxidation of alpha-pinene.
Secondary organic aerosol (SOA) formation from hydroxyl radical (OH*) initiated photooxidation of alpha-pinene was investigated in a home-made smog chamber. The size distribution of SOA particles was measured using aerodynamic particle sizer spectrometer. The effects of illumination intensity and light application time on SOA formation for alpha-pinene were evaluated. Experimental results show that the concentration of SOA particles increased significantly with an increasing of illumination intensity, and the light application time, the concentration, and the size of SOA particles were also increased. In addition, the factors influencing the formation of SOA were discussed. In addition, this article compared the effect of alpha-pinene with that of toluene, and discussed the contribution of alpha-pinene to SOA formation.
Liu
Xianyun
X
Laboratory of Environment Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China. xianyunliu@gmail.com
Zhang
Weijun
W
Huang
Mingqiang
M
Wang
Zhenya
Z
Hao
Liqing
L
Zhao
Wenwu
W
D000336:Aerosols; D000081008:Bicyclic Monoterpenes; D039821:Monoterpenes / Q000737:chemistry*; D010084:Oxidation-Reduction; D010316:Particle Size; D010777:Photochemistry
D000336:Aerosols; D000081008:Bicyclic Monoterpenes; D039821:Monoterpenes; C005451:alpha-pinene