Spatiotemporal distributions and source apportionment of PM2.5-bound antimony in Beijing, China
Spatiotemporal distributions and source apportionment of PM2.5-bound antimony in Beijing, China
Simple item page
Full item details
- dc.contributor.author
- Yang, Chenmeng
- Wu, Yunjie
- Zhang, Leiming
- Sun, Guangyi
- Yao, Heng
- Li, Zhonggen
- Bi, Xiangyang
- Huang, Qiang
- Feng, Xinbin
- dc.date.accepted
- 2022-07-24
- dc.date.accessioned
- 2024-02-12T18:48:05Z
- dc.date.available
- 2024-02-12T18:48:05Z
- dc.date.issued
- 2022-08-10
- dc.date.submitted
- 2021-12-24
- dc.description.abstract - en
- Antimony (Sb) is a toxic heavy metal, and PM<sub>2.5</sub>-bound Sb (Sb<sub>PM2.5</sub>) in the air impacts human health via inhalation pathways. In this study, we analyzed multiyear measurements of ambient Sb<sub>PM2.5</sub> in Beijing to characterize its spatiotemporal distributions, identify main sources, and predict future trends. The results show that ambient Sb<sub>PM2.5</sub> has been decreasing with fluctuations from 2005 to 2012 and decreased rapidly after 2013, which was likely a result of the government's enhanced air pollution control plan that targeted main sources of industrial Sb. Across the city, average Sb<sub>PM2.5</sub> concentrations were relatively higher at nonemission locomotive traffic sampling sites and in densely populated areas (9.45–19.45 ng/m<sup>3</sup>) and lower in background areas (0.6–0.9 ng/m<sup>3</sup>). Regional-scale emissions and local human activities both affected the spatial distributions of Sb<sub>PM2.5</sub>. Notably, Sb<sub>PM2.5</sub> concentration increased by 58.3% from 2006 to 2013 in one suburban background area, indicating the changing emission distributions and intensities over the study period. A neural network model was developed and tested to predict future Sb<sub>PM2.5</sub> levels, results from which showed that with simulated massive reductions in coal supplies and a rapid boom in the waste incineration industry, Sb<sub>PM2.5</sub> concentration would vary in a smaller range (from 4.08 to 4.38 ng/m<sup>3</sup>) over the next decade as compared to the observed range during 2011–2018 (19.0–5.44 ng/m<sup>3</sup>). The impact of the continued expansion of the waste incineration industry on Sb<sub>PM2.5</sub> pollution needs to be considered in future emission control policies.
- dc.description.fosrcfull - en
- © 2022. American Geophysical Union. All Rights Reserved.
- dc.description.fosrcfull-fosrctranslation - fr
- © 2022. American Geophysical Union. Tous droits réservés.
- dc.identifier.doi
- https://doi.org/10.1029/2021JD036401
- dc.identifier.issn
- 2169-8996
- 2169-897X
- dc.identifier.uri
- https://open-science.canada.ca/handle/123456789/1930
- dc.language.iso
- en
- dc.publisher
- American Geophysical Union
- dc.rights.openaccesslevel - en
- Green
- dc.rights.openaccesslevel - fr
- Vert
- dc.subject - en
- Nature and environment
- Science and technology
- dc.subject - fr
- Nature et environnement
- Sciences et technologie
- dc.subject.en - en
- Nature and environment
- Science and technology
- dc.subject.fr - fr
- Nature et environnement
- Sciences et technologie
- dc.title - en
- Spatiotemporal distributions and source apportionment of PM2.5-bound antimony in Beijing, China
- dc.type - en
- Article
- dc.type - fr
- Article
- local.article.journalissue
- 16
- local.article.journaltitle
- Journal of Geophysical Research: Atmospheres
- local.article.journalvolume
- 127
- local.pagination
- 17 pages
- local.peerreview - en
- Yes
- local.peerreview - fr
- Oui
- local.requestdoi
- No
Download(s)
Original bundle
1 - 1 of 1
Name: YangSpatiotemporalDistributionsSourceApportionmentPM25BoundAntimonyBeijing.pdf
Size: 2.1 MB
Format: PDF
Collection(s)