Complexities of peroxyacetyl nitrate photochemistry and its control strategies in contrasting environments in the Pearl River Delta region

Tao Liu; Yu Wang; Huang Cai; Hao Wang; Chunlin Zhang; Jun Chen; Yan Dai; Wenlong Zhao; Jiangyong Li; Daocheng Gong; Duohong Chen; Yuhong Zhai; Yan Zhou; Tong Liao; Boguang Wang

doi:10.1038/s41612-024-00669-3

Complexities of peroxyacetyl nitrate photochemistry and its control strategies in contrasting environments in the Pearl River Delta region

Tao Liu, Yu Wang, Huang Cai, Hao Wang, Chunlin Zhang, Jun Chen, Yan Dai, Wenlong Zhao, Jiangyong Li, Daocheng Gong, Duohong Chen, Yuhong Zhai, Yan Zhou, Tong Liao, Boguang Wang

Research output: Journal article publication › Journal article › Academic research › peer-review

3 Citations (Scopus)

Abstract

Peroxyacetyl nitrate (PAN) is a hazardous secondary pollutant and a nitrogen reservoir in the troposphere, while comprehensive studies on its spatiotemporal distribution, chemical sources, and control strategies are limited. This study addressed these issues based on 1-year multi-site observations in the Pearl River Delta region, showing a pattern of higher PAN levels in the cold season, particularly in coastal areas. Moreover, in situ modeling indicated a net photochemical PAN formation in the warm season, while PAN was dominated by regional transport in the cold season (i.e., rural and coastal areas), releasing NO₂ and PA radicals and promoting ozone (O₃) formation. In addition, the feasibility of joint control of PAN and O₃ was confirmed by their isopleth diagrams. C₇–C₉ aromatics and C₄–C₅ alkenes, largely from vehicle exhaust and solvent usage, were identified as the predominant contributors to PAN formation in this region. Overall, this study deepens our understanding of PAN chemistry and provides valuable insights into its control measures.

Original language	English
Article number	116
Journal	npj Climate and Atmospheric Science
Volume	7
Issue number	1
DOIs	https://doi.org/10.1038/s41612-024-00669-3
Publication status	Published - Dec 2024
Externally published	Yes

ASJC Scopus subject areas

Global and Planetary Change
Environmental Chemistry
Atmospheric Science

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10.1038/s41612-024-00669-3

Cite this

Liu, T., Wang, Y., Cai, H., Wang, H., Zhang, C., Chen, J., Dai, Y., Zhao, W., Li, J., Gong, D., Chen, D., Zhai, Y., Zhou, Y., Liao, T., & Wang, B. (2024). Complexities of peroxyacetyl nitrate photochemistry and its control strategies in contrasting environments in the Pearl River Delta region. npj Climate and Atmospheric Science, 7(1), Article 116. https://doi.org/10.1038/s41612-024-00669-3

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title = "Complexities of peroxyacetyl nitrate photochemistry and its control strategies in contrasting environments in the Pearl River Delta region",

abstract = "Peroxyacetyl nitrate (PAN) is a hazardous secondary pollutant and a nitrogen reservoir in the troposphere, while comprehensive studies on its spatiotemporal distribution, chemical sources, and control strategies are limited. This study addressed these issues based on 1-year multi-site observations in the Pearl River Delta region, showing a pattern of higher PAN levels in the cold season, particularly in coastal areas. Moreover, in situ modeling indicated a net photochemical PAN formation in the warm season, while PAN was dominated by regional transport in the cold season (i.e., rural and coastal areas), releasing NO2 and PA radicals and promoting ozone (O3) formation. In addition, the feasibility of joint control of PAN and O3 was confirmed by their isopleth diagrams. C7–C9 aromatics and C4–C5 alkenes, largely from vehicle exhaust and solvent usage, were identified as the predominant contributors to PAN formation in this region. Overall, this study deepens our understanding of PAN chemistry and provides valuable insights into its control measures.",

author = "Tao Liu and Yu Wang and Huang Cai and Hao Wang and Chunlin Zhang and Jun Chen and Yan Dai and Wenlong Zhao and Jiangyong Li and Daocheng Gong and Duohong Chen and Yuhong Zhai and Yan Zhou and Tong Liao and Boguang Wang",

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Liu, T, Wang, Y, Cai, H, Wang, H, Zhang, C, Chen, J, Dai, Y, Zhao, W, Li, J, Gong, D, Chen, D, Zhai, Y, Zhou, Y, Liao, T & Wang, B 2024, 'Complexities of peroxyacetyl nitrate photochemistry and its control strategies in contrasting environments in the Pearl River Delta region', npj Climate and Atmospheric Science, vol. 7, no. 1, 116. https://doi.org/10.1038/s41612-024-00669-3

TY - JOUR

T1 - Complexities of peroxyacetyl nitrate photochemistry and its control strategies in contrasting environments in the Pearl River Delta region

AU - Liu, Tao

AU - Wang, Yu

AU - Cai, Huang

AU - Wang, Hao

AU - Zhang, Chunlin

AU - Chen, Jun

AU - Dai, Yan

AU - Zhao, Wenlong

AU - Li, Jiangyong

AU - Gong, Daocheng

AU - Chen, Duohong

AU - Zhai, Yuhong

AU - Zhou, Yan

AU - Liao, Tong

AU - Wang, Boguang

PY - 2024/12

Y1 - 2024/12

N2 - Peroxyacetyl nitrate (PAN) is a hazardous secondary pollutant and a nitrogen reservoir in the troposphere, while comprehensive studies on its spatiotemporal distribution, chemical sources, and control strategies are limited. This study addressed these issues based on 1-year multi-site observations in the Pearl River Delta region, showing a pattern of higher PAN levels in the cold season, particularly in coastal areas. Moreover, in situ modeling indicated a net photochemical PAN formation in the warm season, while PAN was dominated by regional transport in the cold season (i.e., rural and coastal areas), releasing NO2 and PA radicals and promoting ozone (O3) formation. In addition, the feasibility of joint control of PAN and O3 was confirmed by their isopleth diagrams. C7–C9 aromatics and C4–C5 alkenes, largely from vehicle exhaust and solvent usage, were identified as the predominant contributors to PAN formation in this region. Overall, this study deepens our understanding of PAN chemistry and provides valuable insights into its control measures.

AB - Peroxyacetyl nitrate (PAN) is a hazardous secondary pollutant and a nitrogen reservoir in the troposphere, while comprehensive studies on its spatiotemporal distribution, chemical sources, and control strategies are limited. This study addressed these issues based on 1-year multi-site observations in the Pearl River Delta region, showing a pattern of higher PAN levels in the cold season, particularly in coastal areas. Moreover, in situ modeling indicated a net photochemical PAN formation in the warm season, while PAN was dominated by regional transport in the cold season (i.e., rural and coastal areas), releasing NO2 and PA radicals and promoting ozone (O3) formation. In addition, the feasibility of joint control of PAN and O3 was confirmed by their isopleth diagrams. C7–C9 aromatics and C4–C5 alkenes, largely from vehicle exhaust and solvent usage, were identified as the predominant contributors to PAN formation in this region. Overall, this study deepens our understanding of PAN chemistry and provides valuable insights into its control measures.

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DO - 10.1038/s41612-024-00669-3

M3 - Journal article

AN - SCOPUS:85195170000

SN - 2397-3722

VL - 7

JO - npj Climate and Atmospheric Science

JF - npj Climate and Atmospheric Science

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M1 - 116

ER -

Complexities of peroxyacetyl nitrate photochemistry and its control strategies in contrasting environments in the Pearl River Delta region

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