Articles | Volume 25, issue 20
https://doi.org/10.5194/acp-25-13729-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-13729-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
26 Oct 2025
Research article |
| 26 Oct 2025
| 26 Oct 2025
Long-term Trends in PM2.5 Chemical Composition and Its Impact on Aerosol Properties: Field Observations from 2007 to 2020 in Pearl River Delta, South China
Yunfeng He
State Key Laboratory of Advanced Environmental Technology, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
State Key Laboratory of Advanced Environmental Technology, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
Guangdong–Hong Kong–Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Science, Guangzhou 510640, China
Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Guangzhou 510640, China
Quanfu He
Thrust of Earth, Ocean and Atmospheric Sciences, The Hong Kong University of Science and Technology (Guangzhou), Guangzhou 511453, China
Yuqing Zhang
School of Environment and Safety Engineering, North University of China, Taiyuan 030051, China
Duohong Chen
State Environmental Protection Key Laboratory of Regional Air Quality Monitoring, Guangdong Environmental Monitoring Center, Guangzhou 510308, China
Tao Zhang
State Environmental Protection Key Laboratory of Regional Air Quality Monitoring, Guangdong Environmental Monitoring Center, Guangzhou 510308, China
Kong Yang
State Key Laboratory of Advanced Environmental Technology, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
Junqi Wang
State Key Laboratory of Advanced Environmental Technology, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
Qian Cheng
State Key Laboratory of Advanced Environmental Technology, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
Hao Jiang
State Key Laboratory of Advanced Environmental Technology, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
Zirui Wang
State Key Laboratory of Advanced Environmental Technology, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
Ping Liu
State Key Laboratory of Advanced Environmental Technology, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
Xinming Wang
State Key Laboratory of Advanced Environmental Technology, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
Guangdong–Hong Kong–Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Science, Guangzhou 510640, China
Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Guangzhou 510640, China
Michael Boy
CORRESPONDING AUTHOR
Institute for Atmospheric and Earth Systems Research, University of Helsinki, Helsinki 00014, Finland
Atmospheric Modelling Centre – Lahti, Lahti University Campus, Lahti 15140, Finland
School of Engineering Sciences, Lappeenranta-Lahti University of Technology, Lappeenranta 53850, Finland
Viewed
Total article views: 1,744 (including HTML, PDF, and XML)
Cumulative views and downloads
(calculated since 28 May 2025)
| HTML | XML | Total | Supplement | BibTeX | EndNote | |
|---|---|---|---|---|---|---|
| 1,515 | 194 | 35 | 1,744 | 62 | 18 | 31 |
- HTML: 1,515
- PDF: 194
- XML: 35
- Total: 1,744
- Supplement: 62
- BibTeX: 18
- EndNote: 31
Total article views: 644 (including HTML, PDF, and XML)
Cumulative views and downloads
(calculated since 26 Oct 2025)
| HTML | XML | Total | Supplement | BibTeX | EndNote | |
|---|---|---|---|---|---|---|
| 549 | 85 | 10 | 644 | 24 | 6 | 5 |
- HTML: 549
- PDF: 85
- XML: 10
- Total: 644
- Supplement: 24
- BibTeX: 6
- EndNote: 5
Total article views: 1,100 (including HTML, PDF, and XML)
Cumulative views and downloads
(calculated since 28 May 2025)
| HTML | XML | Total | Supplement | BibTeX | EndNote | |
|---|---|---|---|---|---|---|
| 966 | 109 | 25 | 1,100 | 38 | 12 | 26 |
- HTML: 966
- PDF: 109
- XML: 25
- Total: 1,100
- Supplement: 38
- BibTeX: 12
- EndNote: 26
Viewed (geographical distribution)
Total article views: 1,744 (including HTML, PDF, and XML)
Thereof 1,734 with geography defined
and 10 with unknown origin.
Total article views: 644 (including HTML, PDF, and XML)
Thereof 642 with geography defined
and 2 with unknown origin.
Total article views: 1,100 (including HTML, PDF, and XML)
Thereof 1,092 with geography defined
and 8 with unknown origin.
| Country | # | Views | % |
|---|
| Country | # | Views | % |
|---|
| Country | # | Views | % |
|---|
| Total: | 0 |
| HTML: | 0 |
| PDF: | 0 |
| XML: | 0 |
- 1
1
| Total: | 0 |
| HTML: | 0 |
| PDF: | 0 |
| XML: | 0 |
- 1
1
| Total: | 0 |
| HTML: | 0 |
| PDF: | 0 |
| XML: | 0 |
- 1
1
Latest update: 15 Nov 2025
Short summary
This study presented field measurements of PM2.5 and its chemical composition at a regional background site in the Pearl River Delta (PRD) from 2007 to 2020. As air quality improved, secondary species became more dominant. The changes in chemical composition led to the reductions in aerosol acidity, liquid water content and light extinction coefficient. Our results help to improve understanding of the secondary species formation under decreasing anthropogenic emissions.
This study presented field measurements of PM2.5 and its chemical composition at a regional...
Altmetrics
Final-revised paper
Preprint