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Effects of Early Pollution Control Measures on Secondary Species of PM(2.5) in Jiaozuo, China
[Image: see text] Various measures for reducing air pollution have been promulgated since 2013 in China. To investigate the synergistic results of emission control and meteorological environment, PM(2.5) samples collected from October 2013 to July 2016 and November 2018 to October 2019 in Jiaozuo ci...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2021
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7818311/ https://www.ncbi.nlm.nih.gov/pubmed/33490774 http://dx.doi.org/10.1021/acsomega.0c04169 |
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author | Tang, Junting Song, Dangyu Ji, Wanwan Fan, Liudan |
author_facet | Tang, Junting Song, Dangyu Ji, Wanwan Fan, Liudan |
author_sort | Tang, Junting |
collection | PubMed |
description | [Image: see text] Various measures for reducing air pollution have been promulgated since 2013 in China. To investigate the synergistic results of emission control and meteorological environment, PM(2.5) samples collected from October 2013 to July 2016 and November 2018 to October 2019 in Jiaozuo city were analyzed for their compositions, secondary species (Ss) variations, and factors changing for Ss formation. The results showed that the concentrations of sulfate, nitrate, ammonium, and secondary organic aerosols (SOAs) generally decreased over the same seasonal period during these years. In addition, the concentrations and proportions of each Ss increased with the increase in the PM(2.5) level in these years, implying that although PM(2.5) levels have been reduced by various control policies, Ss formation would remain the major contributor to PM elevations. The enhanced effects of gas-phase reactions on intensification of sulfate, SOA, and PM were observed in 2018–2019, which was consistent with the elevation of nitrate and SOA at PM levels of >150 μg/m(3). Only sulfate in all PM levels sharply decreased after 2015, showing the fine effect of coal-related pollution control and the importance of collaborative control of NO(x), volatile organic compounds, and organic aerosol emissions with SO(2) emissions in the future. |
format | Online Article Text |
id | pubmed-7818311 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-78183112021-01-22 Effects of Early Pollution Control Measures on Secondary Species of PM(2.5) in Jiaozuo, China Tang, Junting Song, Dangyu Ji, Wanwan Fan, Liudan ACS Omega [Image: see text] Various measures for reducing air pollution have been promulgated since 2013 in China. To investigate the synergistic results of emission control and meteorological environment, PM(2.5) samples collected from October 2013 to July 2016 and November 2018 to October 2019 in Jiaozuo city were analyzed for their compositions, secondary species (Ss) variations, and factors changing for Ss formation. The results showed that the concentrations of sulfate, nitrate, ammonium, and secondary organic aerosols (SOAs) generally decreased over the same seasonal period during these years. In addition, the concentrations and proportions of each Ss increased with the increase in the PM(2.5) level in these years, implying that although PM(2.5) levels have been reduced by various control policies, Ss formation would remain the major contributor to PM elevations. The enhanced effects of gas-phase reactions on intensification of sulfate, SOA, and PM were observed in 2018–2019, which was consistent with the elevation of nitrate and SOA at PM levels of >150 μg/m(3). Only sulfate in all PM levels sharply decreased after 2015, showing the fine effect of coal-related pollution control and the importance of collaborative control of NO(x), volatile organic compounds, and organic aerosol emissions with SO(2) emissions in the future. American Chemical Society 2021-01-05 /pmc/articles/PMC7818311/ /pubmed/33490774 http://dx.doi.org/10.1021/acsomega.0c04169 Text en © 2021 The Authors. Published by American Chemical Society This is an open access article published under a Creative Commons Non-Commercial No Derivative Works (CC-BY-NC-ND) Attribution License (http://pubs.acs.org/page/policy/authorchoice_ccbyncnd_termsofuse.html) , which permits copying and redistribution of the article, and creation of adaptations, all for non-commercial purposes. |
spellingShingle | Tang, Junting Song, Dangyu Ji, Wanwan Fan, Liudan Effects of Early Pollution Control Measures on Secondary Species of PM(2.5) in Jiaozuo, China |
title | Effects of Early Pollution Control Measures on Secondary
Species of PM(2.5) in Jiaozuo, China |
title_full | Effects of Early Pollution Control Measures on Secondary
Species of PM(2.5) in Jiaozuo, China |
title_fullStr | Effects of Early Pollution Control Measures on Secondary
Species of PM(2.5) in Jiaozuo, China |
title_full_unstemmed | Effects of Early Pollution Control Measures on Secondary
Species of PM(2.5) in Jiaozuo, China |
title_short | Effects of Early Pollution Control Measures on Secondary
Species of PM(2.5) in Jiaozuo, China |
title_sort | effects of early pollution control measures on secondary
species of pm(2.5) in jiaozuo, china |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7818311/ https://www.ncbi.nlm.nih.gov/pubmed/33490774 http://dx.doi.org/10.1021/acsomega.0c04169 |
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