光照强度和光照时间对α-蒎烯光氧化生成二次有机气溶胶的影响。
Effect of illumination intensity and light application time on secondary organic aerosol formation from the photooxidation of alpha-pinene.
作者信息
Liu Xianyun, Zhang Weijun, Huang Mingqiang, Wang Zhenya, Hao Liqing, Zhao Wenwu
机构信息
Laboratory of Environment Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China.
出版信息
J Environ Sci (China). 2009;21(4):447-51. doi: 10.1016/s1001-0742(08)62290-1.
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.
在自制的烟雾箱中研究了由羟基自由基（OH*）引发的α-蒎烯光氧化形成二次有机气溶胶（SOA）的过程。使用气动力学粒径谱仪测量了SOA颗粒的粒径分布。评估了光照强度和光照时间对α-蒎烯形成SOA的影响。实验结果表明，SOA颗粒浓度随光照强度的增加而显著增加，且光照时间、SOA颗粒的浓度和粒径也增加。此外，还讨论了影响SOA形成的因素。此外，本文比较了α-蒎烯与甲苯的作用，并讨论了α-蒎烯对SOA形成的贡献。
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