Influence of Aerosol Chemical Composition on Condensation Sink Efficiency and New Particle Formation in Beijing
文献类型：期刊论文
| 作者 | Du, Wei; Cai, Jing; Zheng, Feixue; Yan, Chao; Zhou, Ying ; Guo, Yishuo; Chu, Biwu; Yao, Lei; Heikkinen, Liine M.; Fan, Xiaolong
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| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
 |
| 出版日期 | 2022-05-10 |
| 卷号 | 9期号:5页码:375-382 |
| 关键词 | NUMBER SIZE DISTRIBUTIONS SULFURIC-ACID AIR-POLLUTION URBAN NUCLEATION GROWTH SPECTROMETER NITRATE EVENTS |
| ISSN号 | 2328-8930 |
| 英文摘要 | Relatively high concentrations of preexisting particles, acting as a condensation sink (CS) of gaseous precursors, have been thought to suppress the occurrence of new particle formation (NPF) in urban environments, yet NPF still occurs frequently. Here, we aim to understand the factors promoting and inhibiting NPF events in urban Beijing by combining one-year-long measurements of particle number size distributions and PM2.5 chemical composition. Our results show that indeed the CS is an important factor controlling the occurrence of NPF events, with its chemical composition affecting the efficiency of the background particles in removing gaseous H2SO4 (effectiveness of the CS) driving NPF. During our observation period, the CS was found to be more effective for ammonium nitrate-rich (NH4NO3-rich) fine particles. On non-NPF event days, particles acting as CS contained a larger fraction of NH4NO3 compared to NPF event days under comparable CS levels. In particular, in the CS range from 0.02 to 0.03 s(-1), the nitrate fraction was 17% on NPF event days and 26% on non-NPF event days. Overall, our results highlight the importance of considering the chemical composition of preexisting particles when estimating the CS and their role in inhibiting NPF events, especially in urban environments. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47411]  |
| 专题 | 生态环境研究中心_大气污染控制中心 |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100085, Peoples R China 2.Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, Aerosol & Haze Lab, Beijing 100089, Peoples R China 3.Univ Helsinki, Inst Atmospher & Earth Syst Res Phys, Fac Sci, Helsinki 00014, Finland 4.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China 5.Paul Scherrer Inst, Lab Atmospher Chem, CH-5232 Villigen, Switzerland |
| 推荐引用方式 GB/T 7714 | Du, Wei,Cai, Jing,Zheng, Feixue,et al. Influence of Aerosol Chemical Composition on Condensation Sink Efficiency and New Particle Formation in Beijing[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS,2022,9(5):375-382. |
| APA | Du, Wei.,Cai, Jing.,Zheng, Feixue.,Yan, Chao.,Zhou, Ying.,...&Kulmala, Markku.(2022).Influence of Aerosol Chemical Composition on Condensation Sink Efficiency and New Particle Formation in Beijing.ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS,9(5),375-382. |
| MLA | Du, Wei,et al."Influence of Aerosol Chemical Composition on Condensation Sink Efficiency and New Particle Formation in Beijing".ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS 9.5(2022):375-382. |
入库方式： OAI收割
来源：生态环境研究中心
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