Secondary organic aerosol formation from mixed volatile organic compounds: Effect of RO2 chemistry and precursor concentration
文献类型：期刊论文
| 作者 | Chen, Tianzeng ; Zhang, Peng; Chu, Biwu; Ma, Qingxin; Ge, Yanli; Liu, Jun; He, Hong
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| 刊名 | NPJ CLIMATE AND ATMOSPHERIC SCIENCE
 |
| 出版日期 | 2022 |
| 卷号 | 5期号:1页码:95-1-8 |
| ISSN号 | 2397-3722 |
| 英文摘要 | Secondary organic aerosol (SOA) plays a significant role in contributing to atmospheric fine particles, as well as in global air quality and climate. However, the current understanding of the atmospheric formation of SOA and its simulation is still highly uncertain due to the complexity of its precursor VOCs. In our study, SOA formation in different mixed VOC scenarios was investigated using a 30 m(3) indoor smog chamber. By comparing SOA formation in individual VOC scenarios, it was found that SOA yield from anthropogenic VOCs (AVOCs) can be positively (+83.9%) affected by coexisting AVOCs, while inhibited (-51.4%) by the presence of isoprene, via the OH scavenging effect. The cross-reactions of peroxyl radical (RO2) generated from different AVOCs were proved to be the main contributor (up to 39.0%) to SOA formation, highlighting the importance of RO2 + R'O-2 reactions in mixed VOC scenarios. Meanwhile, the formation of gas-phase organic intermediates of different volatility categories from the RO2 reactions was also affected by the precursor concentration, and a higher SOA yield was found at lower precursor concentrations due to the larger contribution of intermediates with lower volatility. Our study provides new insights into SOA formation by considering the interactions between intermediate products from mixed VOCs. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/48459]  |
| 专题 | 生态环境研究中心_大气污染控制中心 |
| 作者单位 | 1.Institute of Urban Environment, CAS 2.Research Center for Eco-Environmental Sciences (RCEES) 3.Chinese Academy of Sciences 4.Peking University 5.University of Chinese Academy of Sciences, CAS |
| 推荐引用方式 GB/T 7714 | Chen, Tianzeng,Zhang, Peng,Chu, Biwu,et al. Secondary organic aerosol formation from mixed volatile organic compounds: Effect of RO2 chemistry and precursor concentration[J]. NPJ CLIMATE AND ATMOSPHERIC SCIENCE,2022,5(1):95-1-8. |
| APA | Chen, Tianzeng.,Zhang, Peng.,Chu, Biwu.,Ma, Qingxin.,Ge, Yanli.,...&He, Hong.(2022).Secondary organic aerosol formation from mixed volatile organic compounds: Effect of RO2 chemistry and precursor concentration.NPJ CLIMATE AND ATMOSPHERIC SCIENCE,5(1),95-1-8. |
| MLA | Chen, Tianzeng,et al."Secondary organic aerosol formation from mixed volatile organic compounds: Effect of RO2 chemistry and precursor concentration".NPJ CLIMATE AND ATMOSPHERIC SCIENCE 5.1(2022):95-1-8. |
入库方式： OAI收割
来源：生态环境研究中心
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