Articles | Volume 20, issue 8
https://doi.org/10.5194/acp-20-5019-2020
https://doi.org/10.5194/acp-20-5019-2020
Research article
 | 
28 Apr 2020
Research article |  | 28 Apr 2020

Nitrate-dominated PM2.5 and elevation of particle pH observed in urban Beijing during the winter of 2017

Yuning Xie, Gehui Wang, Xinpei Wang, Jianmin Chen, Yubao Chen, Guiqian Tang, Lili Wang, Shuangshuang Ge, Guoyan Xue, Yuesi Wang, and Jian Gao

Viewed

Total article views: 3,785 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
2,432 1,311 42 3,785 333 45 122
  • HTML: 2,432
  • PDF: 1,311
  • XML: 42
  • Total: 3,785
  • Supplement: 333
  • BibTeX: 45
  • EndNote: 122
Views and downloads (calculated since 15 Jul 2019)
Cumulative views and downloads (calculated since 15 Jul 2019)

Viewed (geographical distribution)

Total article views: 3,785 (including HTML, PDF, and XML) Thereof 3,493 with geography defined and 292 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Latest update: 15 Apr 2024
Download
Short summary
As a result of strict emission control, nitrate-dominated PM2.5 in pollution episodes was observed in urban Beijing during the winter of 2017–2018. With the help of sufficient ammonia, particle pH could increase to near neutral (5.4) as particulate nitrate fraction increases. Further tests imply that airborne particle hygroscopicity would be enhanced at moderate RH in nitrate-dominated particles, and pH elevation will be accelerated when ammonia and particulate nitrate both increase.
Altmetrics
Final-revised paper
Preprint