Particle growth with photochemical age from new particle formation to haze in the winter of Beijing, China
文献类型：期刊论文
| 作者 | Chu, Biwu; Dada, Lubna; Liu, Yongchun; Yao, Lei; Wang, Yonghong; Du, Wei; Cai, Jing; Dallenbach, K. R.; Chen, Xuemeng; Simonen, Pauli |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2021-01-20 |
| 卷号 | 753页码:- |
| 关键词 | Photochemical aging New particle formation Haze Pollution evolution Condensation sink |
| ISSN号 | 0048-9697 |
| 英文摘要 | Secondary aerosol formation in the aging process of primary emission is the main reason for haze pollution in eastern China. Pollution evolution with photochemical age was studied for the first time at a comprehensive field observation station during winter in Beijing. The photochemical age was used as an estimate of the time scale attributed to the aging process and was estimated from the ratio of toluene to benzene in this study. A low photochemical age indicates a fresh emission. The photochemical age of air masses during new particle formation (NPF) days was lower than that on haze days. In general, the strongest NPF events, along with a peak of the formation rate of 1.5 nm(J(1.5)) and 3 nmparticles (J(3)), were observed when the photochemical age was between 12 and 24 h while rarely took place with photochemical ages less than 12 h. When photochemical age was larger than 48 h, haze occurred and NPF was suppressed. The sources and sinks of nanoparticles had distinct relation with the photochemical age. Our results show that the condensation sink (CS) showed a valley with photochemical ages ranging from 12 to 24 h, while H2SO4 concentration showed no obvious trend with the photochemical age. The high concentrations of precursor vapours within an air mass lead to persistent nucleation with photochemical age ranging from 12 to 48 h in winter. Coincidently, the fast increase of PM2.5 mass was also observed during this range of photochemical age. Noteworthy, CS increased with the photochemical age on NPF days only, which is the likely reason for the observation that the PM2.5 mass increased faster with photochemical age on NPF days compared with other days. The evolution of particles with the photochemical age provides new insights into understanding how particles originating from NPF transform to haze pollution. (C) 2020 Elsevier B.V. All rights reserved. |
| WOS研究方向 | Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46060]  |
| 专题 | 生态环境研究中心_水污染控制实验室 |
| 作者单位 | 1.Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, Aerosol & Haze Lab, Beijing, Peoples R China 2.Univ Helsinki, Fac Sci, Inst Atmospher & Earth Syst Res Phys, Helsinki, Finland 3.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China 4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100085, Peoples 5.Tampere Univ, Fac Engn & Nat Sci, Phys Unit, Aerosol Phys Lab, Tampere, Finland 6.Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing |
| 推荐引用方式 GB/T 7714 | Chu, Biwu,Dada, Lubna,Liu, Yongchun,et al. Particle growth with photochemical age from new particle formation to haze in the winter of Beijing, China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,753:-. |
| APA | Chu, Biwu.,Dada, Lubna.,Liu, Yongchun.,Yao, Lei.,Wang, Yonghong.,...&Kulmala, Markku.(2021).Particle growth with photochemical age from new particle formation to haze in the winter of Beijing, China.SCIENCE OF THE TOTAL ENVIRONMENT,753,-. |
| MLA | Chu, Biwu,et al."Particle growth with photochemical age from new particle formation to haze in the winter of Beijing, China".SCIENCE OF THE TOTAL ENVIRONMENT 753(2021):-. |
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来源：生态环境研究中心
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