Wang Qian
State Environmental Protection Key Laboratory of Formation and Prevention of Urban Air Complex, Shanghai Academy of Environmental Sciences, Shanghai 200233, China.
Huan Jing Ke Xue. 2020 Jun 8;41(6):2555-2564. doi: 10.13227/j.hjkx.201907115.
In the urban area of Shanghai during the complex pollution episode, ozone and PM were continuously measured from May 1 to May 28, 2019. The characterization of volatile organic compounds (VOCs) and their relationship with secondary formation were studied. The results show that in May 2019, there were four different ozone and PM pollution processes in Shanghai. The combined pollution of PM and ozone that occurred under the meteorological conditions of average temperature of approximately 26℃ and relative humidity of approximately 40% was analyzed. The photochemical consumption of VOCs was significantly positively correlated with the maximum net growth of O and there was a significant positive correlation between SOA and PM. The key reactive species of VOCs that significantly contribute to ozone generation were ,-xylene, ethylene, toluene, propylene, and -xylene. The key reactive species that significantly contribute to secondary organic aerosols (SOA) were toluene, ,-xylene, ethylbenzene, -xylene, and 1,2,3-trimethylbenzene.
在2019年5月1日至5月28日上海城区复杂污染事件期间，对臭氧和颗粒物进行了连续监测。研究了挥发性有机化合物（VOCs）的特征及其与二次生成的关系。结果表明，2019年5月上海出现了4次不同的臭氧和颗粒物污染过程。分析了在平均气温约26℃、相对湿度约40%的气象条件下发生的颗粒物与臭氧的复合污染。VOCs的光化学消耗与O的最大净增长显著正相关，二次有机气溶胶（SOA）与颗粒物之间存在显著正相关。对臭氧生成有显著贡献的VOCs关键反应物种为间二甲苯、乙烯、甲苯、丙烯和对二甲苯。对二次有机气溶胶（SOA）有显著贡献的关键反应物种为甲苯、间二甲苯、乙苯、对二甲苯和1,2,3-三甲基苯。
