Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.
Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.
J Environ Sci (China). 2020 Dec;98:161-168. doi: 10.1016/j.jes.2020.05.021. Epub 2020 Jun 19.
Increasing attention has been paid to the air pollution more recently. Smog chamber has been proved as a necessary and effective tool to study atmospheric processes, including photochemical smog and haze formation. A novel smog chamber was designed to study the atmospheric photochemical reaction mechanism of typical volatile organic compounds (VOCs) as well as the aging of aerosols. The smog chamber system includes an enclosure equipped with black lights as the light source, two parallel reactors (2 m of each) with separate control of light source and temperature, with a series of coupled instruments for online monitoring of gas phase and particle phase reactants and products. Chamber characterization, including air source stability, effective light intensity, temperature stability, as well as gas phase and particle phase wall losses, were carried out before further research. The results showed that our smog chamber systems developed by other domestic and international groups. It was also observed that the wall loss of aromatic VOCs varied with different functional groups as well as the isomerism. The results of preliminary simulation experiment from styrene-NO demonstrated that the chamber can be well utilized to simulate gas-particle conversion progresses in the atmosphere.
最近，人们越来越关注空气污染问题。烟雾箱已被证明是研究大气过程的必要且有效的工具，包括光化学烟雾和雾霾的形成。本研究设计了一种新型烟雾箱，用于研究典型挥发性有机化合物（VOCs）的大气光化学反应机制以及气溶胶的老化过程。烟雾箱系统包括一个配有黑光灯作为光源的封闭室，两个平行的反应器（每个 2 米长），可以单独控制光源和温度，以及一系列用于在线监测气相和颗粒相反应物和产物的耦合仪器。在进一步研究之前，进行了腔室特性，包括气源稳定性、有效光强、温度稳定性以及气相和颗粒相壁损失的测试。结果表明，我们开发的烟雾箱系统与其他国内外研究小组的烟雾箱系统相似。还观察到芳香族 VOCs 的壁损失随不同的官能团和异构体而变化。初步的苯乙烯-NO 模拟实验结果表明，该腔室可用于模拟大气中气相-颗粒相转化过程。
