Sulfuric acid-amine nucleation in urban Beijing

被引:86
作者
Cai, Runlong [1 ,2 ,3 ]
Yan, Chao [1 ,3 ]
Yang, Dongsen [4 ]
Yin, Rujing [2 ]
Lu, Yiqun [5 ]
Deng, Chenjuan [2 ]
Fu, Yueyun [2 ]
Ruan, Jiaxin [4 ]
Li, Xiaoxiao [2 ]
Kontkanen, Jenni [3 ]
Zhang, Qiang [2 ]
Kangasluoma, Juha [1 ,3 ]
Ma, Yan [4 ]
Hao, Jiming [2 ]
Worsnop, Douglas R. [3 ,6 ]
Bianchi, Federico [3 ]
Paasonen, Pauli [3 ]
Kerminen, Veli-Matti [3 ]
Liu, Yongchun [1 ]
Wang, Lin [5 ]
Zheng, Jun [4 ]
Kulmala, Markku [1 ,3 ]
Jiang, Jingkun [2 ]
机构
[1] Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, Aerosol & Haze Lab, Beijing 100029, Peoples R China
[2] Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China
[3] Univ Helsinki, Fac Sci, Inst Atmospher & Earth Syst Res Phys, Helsinki 00014, Finland
[4] Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Atmospher Environm & Equip, Nanjing 210044, Peoples R China
[5] Fudan Univ, Dept Environm Sci & Engn, Shanghai Key Lab Atmospher Particle Pollut & Prev, Shanghai 200433, Peoples R China
[6] Aerodyne Res Inc, Billerica, MA 01821 USA
基金
芬兰科学院; 欧洲研究理事会; 美国国家科学基金会; 国家重点研发计划;
关键词
D O I
10.5194/acp-21-2457-2021
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
New particle formation (NPF) is one of the major sources of atmospheric ultrafine particles. Due to the high aerosol and trace gas concentrations, the mechanism and governing factors for NPF in the polluted atmospheric boundary layer may be quite different from those in clean environments, which is however less understood. Herein, based on long-term atmospheric measurements from January 2018 to March 2019 in Beijing, the nucleation mechanism and the influences of H2SO4 concentration, amine concentrations, and aerosol concentration on NPF are quantified. The collision of H2SO4-amine clusters is found to be the dominating mechanism to initialize NPF in urban Beijing. The coagulation scavenging due to the high aerosol concentration is a governing factor as it limits the concentration of H2SO4-amine clusters and new particle formation rates. The formation of H2SO4-amine clusters in Beijing is sometimes limited by low amine concentrations. Summarizing the synergistic effects of H2SO4 concentration, amine concentrations, and aerosol concentration, we elucidate the governing factors for H2SO4-amine nucleation for various conditions.
引用
收藏
页码:2457 / 2468
页数:12
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