Reduced atmospheric sulfate enhances fine particulate nitrate formation in eastern China
Copyright © 2023. Published by Elsevier B.V..
Nitrate (NO3-) is a major component of atmospheric fine particles. Recent studies in eastern China have shown the increasing trend of NO3- in contrast to the ongoing control of nitrogen oxide (NOx). Here, we elucidate the effects of reduced sulfur dioxide (SO2) on the enhancement of NO3- formation based on field measurements at the summit of Mt. Tai (1534 m a.s.l.) and present detailed modelling analyses. From 2007 to 2018, the measured springtime concentrations of various primary pollutants and fine sulfate (SO42-) decreased sharply (-16.4 % to -89.7 %), whereas fine NO3- concentration increased by 22.8 %. The elevated NO3- levels cannot be explained by the changes in meteorological conditions or other related parameters but were primarily attributed to the considerable reduction in SO42- concentrations (-73.4 %). Results from a multi-phase chemical box model indicated that the reduced SO42- levels decreased the aerosol acidity and prompted the partitioning of HNO3 into the aerosol phase. WRF-Chem model analyses suggest that such a negative effect is a regional phenomenon throughout the planetary boundary layer over eastern China in spring. This study provides new insights into the worsening situation of NO3- aerosol pollution and has important implications for controlling haze pollution in China.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:898 |
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| Enthalten in: |
The Science of the total environment - 898(2023) vom: 10. Nov., Seite 165303 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Wen, Liang [VerfasserIn] |
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| Links: |
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| Themen: |
Eastern China |
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| Anmerkungen: |
Date Revised 29.09.2023 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1016/j.scitotenv.2023.165303 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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NLM359204112 |
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| 520 | |a Copyright © 2023. Published by Elsevier B.V. | ||
| 520 | |a Nitrate (NO3-) is a major component of atmospheric fine particles. Recent studies in eastern China have shown the increasing trend of NO3- in contrast to the ongoing control of nitrogen oxide (NOx). Here, we elucidate the effects of reduced sulfur dioxide (SO2) on the enhancement of NO3- formation based on field measurements at the summit of Mt. Tai (1534 m a.s.l.) and present detailed modelling analyses. From 2007 to 2018, the measured springtime concentrations of various primary pollutants and fine sulfate (SO42-) decreased sharply (-16.4 % to -89.7 %), whereas fine NO3- concentration increased by 22.8 %. The elevated NO3- levels cannot be explained by the changes in meteorological conditions or other related parameters but were primarily attributed to the considerable reduction in SO42- concentrations (-73.4 %). Results from a multi-phase chemical box model indicated that the reduced SO42- levels decreased the aerosol acidity and prompted the partitioning of HNO3 into the aerosol phase. WRF-Chem model analyses suggest that such a negative effect is a regional phenomenon throughout the planetary boundary layer over eastern China in spring. This study provides new insights into the worsening situation of NO3- aerosol pollution and has important implications for controlling haze pollution in China | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Eastern China | |
| 650 | 4 | |a Long-term variation | |
| 650 | 4 | |a Mt. Tai | |
| 650 | 4 | |a Nitrate | |
| 650 | 4 | |a PM(2.5) | |
| 650 | 4 | |a Sulfate | |
| 700 | 1 | |a Xue, Likun |e verfasserin |4 aut | |
| 700 | 1 | |a Dong, Can |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Xinfeng |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Tianshu |e verfasserin |4 aut | |
| 700 | 1 | |a Jiang, Ying |e verfasserin |4 aut | |
| 700 | 1 | |a Gu, Rongrong |e verfasserin |4 aut | |
| 700 | 1 | |a Zheng, Penggang |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Hongyong |e verfasserin |4 aut | |
| 700 | 1 | |a Shan, Ye |e verfasserin |4 aut | |
| 700 | 1 | |a Zhu, Yujiao |e verfasserin |4 aut | |
| 700 | 1 | |a Zhao, Yong |e verfasserin |4 aut | |
| 700 | 1 | |a Yin, Xiangkun |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Hengde |e verfasserin |4 aut | |
| 700 | 1 | |a Gao, Jian |e verfasserin |4 aut | |
| 700 | 1 | |a Wu, Zhijun |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Tao |e verfasserin |4 aut | |
| 700 | 1 | |a Herrmann, Hartmut |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Wenxing |e verfasserin |4 aut | |
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