857直播体育胡敏教授和郭松研究员课题组近期研究成果“Mass spectral characterization of secondary organic aerosol from urban cooking and vehicular sources”和“Formation and Evolution of Secondary Organic Aerosol Derived from Urban Lifestyle Sources: Vehicle Exhaust and Cooking Emissions”, 先后发表在大气环境化学领域知名期刊Atmospheric Chemistry and Physics,第一作者为博士后朱雯斐与博士生张子睿。
机动车源和餐饮源与城市居民的生活息息相关,是大气污染的典型生活方式源。我国汽车保有量从2013年的1.2亿辆,增加至2019年的3.48亿辆;同时,我国餐饮业收入额也从2006年的1万亿,增加至2019年的4.7万亿。已有研究结果表明在我国空气质量持续改善的形势下,两种生活方式源对PM2.5污染的相对贡献变得愈发重要。已有研究指出机动车源与餐饮源是城市大气中一次有机气溶胶的重要来源,但此两种城市生活方式源排放生成的二次有机溶胶(SOA)的特征及其对PM2.5的贡献仍不清楚,导致难以准确估计其对PM2.5污染的贡献及评价其环境与健康效应。
本研究进行了符合我国国情的机动车与餐饮源模拟实验,探讨了本地化的生活方式源SOA的生成特征;建立了生活方式源SOA的指纹特征,并依此构建了 “实验室模拟—大气外场观测”的SOA估算新方法;进而实现了对真实大气环境下生活方式源SOA的高时间分辨率的识别与定量。初步的研究结果表明,机动车与餐饮源贡献的一次有机气溶胶含量相当;但机动车具有更高的二次生成潜势,且贡献了大部分的高氧化态SOA。
本研究明确的城市生活方式源对大气颗粒物的重要贡献,为精准治污和估算其环境与健康效应提供了科学支撑。
图1 城市生活方式源的“实验室模拟—大气外场观测”综合实验
论文信息与链接
Zhu, W., Guo, S.*, Zhang, Z., Wang, H., Yu, Y., Chen, Z., Shen, R., Tan, R., Song, K., Liu, K., Tang, R., Liu, Y., Lou, S., Li, Y., Zhang, W., Zhang, Z., Shuai, S., Xu, H., Li, S., Chen, Y., Hu, M., Canonaco, F., and Prévôt, A. S. H.: Mass spectral characterization of secondary organic aerosol from urban cooking and vehicular sources, Atmos. Chem. Phys., 21, 15065–15079, https://doi.org/10.5194/acp-21-15065-2021, 2021.
Zhang, Z., Zhu, W., Hu, M.*, Liu, K., Wang, H., Tang, R., Shen, R., Yu, Y., Tan, R., Song, K., Li, Y., Zhang, W., Zhang, Z., Xu, H., Shuai, S., Li, S., Chen, Y., Li, J., Wang, Y., and Guo, S.: Formation and evolution of secondary organic aerosols derived from urban-lifestyle sources: vehicle exhaust and cooking emissions, Atmos. Chem. Phys., 21, 15221–15237, https://doi.org/10.5194/acp-21-15221-2021, 2021.
研究团队常年致力于二次有机气溶胶的研究,相关文章如下:
Zhang, Z. R.#; Zhu, W. F.#; Hu, M. *; Wang, H.; Chen, Z.; Shen, R.; Yu, Y.; Tan, R.; Guo, S., Secondary Organic Aerosol from Typical Chinese Domestic Cooking Emissions. Environmental Science & Technology Letters 2021, 8, 24-31.
Wang, H.; Guo, S.*; Yu, Y.; Shen, R.; Zhu, W. F.; Tang, R.; Tan, R.; Liu, K.; Song, K.; Zhang, W.; Zhang, Z.; Shuai, S.; Xu, H.; Zheng, J.; Chen, S.; Li, S.; Zeng, L.; Wu, Z., Secondary aerosol formation from a Chinese gasoline vehicle: Impacts of fuel (E10, gasoline) and driving conditions (idling, cruising). The Science of the total environment 2021, 795, 148809-148809.
Zhu, W. F.; Guo, S.*; Lou, S. R.*; Wang, H.; Yu, Y.; Xu, W.; Liu, Y.; Cheng, Z.; Huang, X.; He, L.; Zeng, L.; Chen, S.; Hu, M., A novel algorithm to determine the scattering coefficient of ambient organic aerosols. Environmental Pollution 2021, 270, 116209.
Yu, Y.; Wang, H.; Wang, T.; Song, K.; Tan, T.; Wan, Z.; Gao, Y.; Dong, H.; Chen, S.; Zeng, L.; Hu, M.; Wang, H.; Lou, S. R.; Zhu, W. F.*; Guo, S.*, Elucidating the importance of semi-volatile organic compounds to secondary organic aerosol formation at a regional site during the EXPLORE-YRD campaign. Atmospheric Environment 2021, 246.
Xiao, Y.; Hu, M.; Zong, T. M.; Wu, Z. J.; Tan, T. Y.; Zhang, Z. R.; Fang, X.; Chen, S. Y.; Guo, S., Insights into aqueous-phase and photochemical formation of secondary organic aerosol in the winter of Beijing. Atmospheric Environment 2021, 259. DOI 10.1016/j.atmosenv.2021.118535.