Sulfuric acid–amine nucleation in urban Beijing-Reference-Cited by-同舟云学术

Sulfuric acid–amine nucleation in urban Beijing

Published:2021-02-18 Issue:4 Volume:21 Page:2457-2468
ISSN:1680-7324
Container-title:Atmospheric Chemistry and Physics
language:en
Short-container-title:Atmos. Chem. Phys.

Author:

Cai Runlong,Yan Chao^ORCID,Yang Dongsen,Yin Rujing,Lu Yiqun^ORCID,Deng Chenjuan,Fu Yueyun,Ruan Jiaxin,Li Xiaoxiao^ORCID,Kontkanen Jenni^ORCID,Zhang Qiang,Kangasluoma Juha^ORCID,Ma Yan,Hao Jiming,Worsnop Douglas R.,Bianchi Federico^ORCID,Paasonen Pauli^ORCID,Kerminen Veli-Matti^ORCID,Liu Yongchun^ORCID,Wang Lin^ORCID,Zheng Jun,Kulmala Markku^ORCID,Jiang Jingkun

Abstract

Abstract. 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.

Funder

Academy of Finland

Publisher

Copernicus GmbH

Subject

Atmospheric Science

Link

https://acp.copernicus.org/articles/21/2457/2021/acp-21-2457-2021.pdf

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