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Fast sulfate formation from oxidation of SO2 by NO2 and HONO observed in Beijing haze.
Wang, Junfeng; Li, Jingyi; Ye, Jianhuai; Zhao, Jian; Wu, Yangzhou; Hu, Jianlin; Liu, Dantong; Nie, Dongyang; Shen, Fuzhen; Huang, Xiangpeng; Huang, Dan Dan; Ji, Dongsheng; Sun, Xu; Xu, Weiqi; Guo, Jianping; Song, Shaojie; Qin, Yiming; Liu, Pengfei; Turner, Jay R; Lee, Hyun Chul; Hwang, Sungwoo; Liao, Hong; Martin, Scot T; Zhang, Qi; Chen, Mindong; Sun, Yele; Ge, Xinlei; Jacob, Daniel J.
Afiliación
  • Wang J; Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, 210044, China.
  • Li J; John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.
  • Ye J; Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, 210044, China.
  • Zhao J; John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.
  • Wu Y; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China.
  • Hu J; Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, 210044, China.
  • Liu D; Department of Atmospheric Sciences, School of Earth Sciences, Zhejiang University, Hangzhou, 310027, China.
  • Nie D; Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, 210044, China.
  • Shen F; Department of Atmospheric Sciences, School of Earth Sciences, Zhejiang University, Hangzhou, 310027, China.
  • Huang X; Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, 210044, China.
  • Huang DD; School of Atmospheric Sciences, Nanjing University, Nanjing, 210023, China.
  • Ji D; Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, 210044, China.
  • Sun X; Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, 210044, China.
  • Xu W; State Environmental Protection Key Laboratory of Formation and Prevention of Urban Air Pollution Complex, Shanghai Academy of Environmental Sciences, Shanghai, 200233, China.
  • Guo J; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China.
  • Song S; State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
  • Qin Y; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China.
  • Liu P; State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, 100081, China.
  • Turner JR; John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.
  • Lee HC; John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.
  • Hwang S; John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.
  • Liao H; Department of Energy, Environmental and Chemical Engineering, Washington University in Saint Louis, St. Louis, MO, 63130, USA.
  • Martin ST; Samsung Advanced Institute of Technology, Suwon-si, Gyeonggi-do, 16678, Republic of Korea.
  • Zhang Q; Samsung Advanced Institute of Technology, Suwon-si, Gyeonggi-do, 16678, Republic of Korea.
  • Chen M; Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, 210044, China.
  • Sun Y; John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.
  • Ge X; Department of Environmental Toxicology, University of California Davis, Davis, CA, 95616, USA.
  • Jacob DJ; Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, 210044, China.
Nat Commun ; 11(1): 2844, 2020 06 05.
Article en En | MEDLINE | ID: mdl-32503967
ABSTRACT
Severe events of wintertime particulate air pollution in Beijing (winter haze) are associated with high relative humidity (RH) and fast production of particulate sulfate from the oxidation of sulfur dioxide (SO2) emitted by coal combustion. There has been considerable debate regarding the mechanism for SO2 oxidation. Here we show evidence from field observations of a haze event that rapid oxidation of SO2 by nitrogen dioxide (NO2) and nitrous acid (HONO) takes place, the latter producing nitrous oxide (N2O). Sulfate shifts to larger particle sizes during the event, indicative of fog/cloud processing. Fog and cloud readily form under winter haze conditions, leading to high liquid water contents with high pH (>5.5) from elevated ammonia. Such conditions enable fast aqueous-phase oxidation of SO2 by NO2, producing HONO which can in turn oxidize SO2 to yield N2O.This mechanism could provide an explanation for sulfate formation under some winter haze conditions.
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Texto completo: 1 Base de datos: MEDLINE Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2020 Tipo del documento: Article País de afiliación: China
Texto completo
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Base de datos: MEDLINE Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2020 Tipo del documento: Article País de afiliación: China