| Title: | Aging effects on residential biomass burning emissions under quasi-real atmospheric conditions |
| Author(s): | Li S; Liu D; Wu Y; Hu K; Jiang X; Tian P; Sheng J; Pan B; Zhao D; |
| Address: | "Department of Atmospheric Sciences, School of Earth Sciences, Zhejiang University, Hangzhou, China. Department of Atmospheric Sciences, School of Earth Sciences, Zhejiang University, Hangzhou, China. Electronic address: dantongliu@zju.edu.cn. Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing, 210044, China. Beijing Weather Modification Office, Beijing, 100089, China" |
| DOI: | 10.1016/j.envpol.2023.122615 |
| ISSN/ISBN: | 1873-6424 (Electronic) 0269-7491 (Linking) |
| Abstract: | "Emissions from biomass burning (BB) vastly contribute to the atmospheric trace gases and particles, which affect air quality and human health. After emission, the chemical evolution changes the mass and composition of organic aerosol (OA) in the diluted and aged plume. In this study, we used a quasi-real atmospheric smog chamber system to conduct aging experiments and investigated the multiphase oxidation of primary organic aerosol (POA) and the formation of secondary organic aerosols (SOA) in residential biomass burning plumes. We found that the emissions in the gas and particle phases were interlinked during the plume evolution. During photochemical aging, more oxidized OA was produced, and SOA formation increased by a factor of 2 due to functionalization reactions of gaseous precursors such as furans, phenols, and carbonyls. On the other hand, dark aging resulted in a lower OA mass enhancement by a factor of 1.2, with weaker oxidation from gaseous reactions. Dark aging experiments resulted in the generation of substantial quantities of nitrogen-containing organic compounds in both gas and particulate phases, while photochemical aging led to a notable increase in the concentration of gaseous carboxylic acids. Our observations show that the properties of SOA are influenced by exposure to sunlight radiation and oxidants such as OH or NO(3) radicals. These results reflect the aging process of BB plumes in real-world atmospheric conditions and highlight the importance of considering various aging mechanisms" |
| Keywords: | Biomass burning Photochemical and dark aging Secondary organic aerosols (SOA) Smog chamber Volatile organic compounds (VOCs); |
| Notes: | "PublisherLi, Siyuan Liu, Dantong Wu, Yangzhou Hu, Kang Jiang, Xiaotong Tian, Ping Sheng, Jiujiang Pan, Baiwan Zhao, Delong eng England 2023/09/28 Environ Pollut. 2023 Sep 25; 337:122615. doi: 10.1016/j.envpol.2023.122615" |
