Highly oxidized organic aerosols in Beijing: Possible contribution of aqueous-phase chemistry
文献类型：期刊论文
| 作者 | Feng, Zemin; Liu, Yongchun; Zheng, Feixue; Yan, Chao; Fu, Peng; Zhang, Yusheng; Lian, Chaofan; Wang, Weigang; Cai, Jing; Du, Wei |
| 刊名 | ATMOSPHERIC ENVIRONMENT
 |
| 出版日期 | 2022-03-15 |
| 卷号 | 273期号:0页码:118971 |
| ISSN号 | 1352-2310 |
| 关键词 | THERMODYNAMIC-EQUILIBRIUM MODEL SOURCE APPORTIONMENT SOA FORMATION SEVERE HAZE CHEMICAL-COMPOSITION SECONDARY AEROSOL NITROUS-ACID HETEROGENEOUS REACTIONS EVOLUTION PROCESSES CARBON MEASUREMENTS |
| 英文摘要 | The oxidation state of organic aerosol (OA) substantially influences the optical and hygroscopic properties, toxicity, and atmospheric lifetime of OA. Comprehensive field measurements have been carried out in Beijing to understand the possible mechanism relevant to the evolution of OA oxidation state in the ambient atmosphere. We found that OA was more oxidized in pollution events in autumn than in winter, evidenced by the higher ratios of OA/OC (2.50 +/- 0.69) and f(44)/f(43) (1.90 +/- 0.54) in autumn than the corresponding values (1.80 +/- 0.39 and 1.64 +/- 0.45) in winter. Plumes with highly oxidized OA were identified to be transported from the southern regions of Beijing and strongly correlated with the high concentration of aerosol water content (AWC), which was dominantly affected by the high concentration of ammonium nitrate and the high RH. This suggests that aqueous-phase chemistry, as regulated by ammonium nitrate and RH, plays a crucial role in the formation of highly oxidized OA in Beijing. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47408]  |
| 专题 | 生态环境研究中心_大气污染控制中心 |
| 通讯作者 | Liu, Yongchun |
| 作者单位 | 1.Beijing Univ Chem Technol, Adv Innovat Ctr Soft Matter Sci & Engn, Aerosol & Haze Lab, Beijing 100029, Peoples R China 2.Hebei Sailhero Environm Protect Hitech Ltd, Shijiazhuang 050035, Peoples R China 3.Univ Helsinki, Inst Atmospher & Earth Syst Res Phys, Fac Sci, Helsinki, Finland 4.Chinese Acad Sci, Inst Chem, State Key Lab Struct Chem Unstable & Stable Specie, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 5.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Feng, Zemin,Liu, Yongchun,Zheng, Feixue,et al. Highly oxidized organic aerosols in Beijing: Possible contribution of aqueous-phase chemistry[J]. ATMOSPHERIC ENVIRONMENT,2022,273(0):118971. |
| APA | Feng, Zemin.,Liu, Yongchun.,Zheng, Feixue.,Yan, Chao.,Fu, Peng.,...&Kulmala, Markku.(2022).Highly oxidized organic aerosols in Beijing: Possible contribution of aqueous-phase chemistry.ATMOSPHERIC ENVIRONMENT,273(0),118971. |
| MLA | Feng, Zemin,et al."Highly oxidized organic aerosols in Beijing: Possible contribution of aqueous-phase chemistry".ATMOSPHERIC ENVIRONMENT 273.0(2022):118971. |
入库方式： OAI收割
来源：生态环境研究中心
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