Articles | Volume 21, issue 10
https://doi.org/10.5194/acp-21-7567-2021
© Author(s) 2021. 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-21-7567-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Formation kinetics and mechanisms of ozone and secondary organic aerosols from photochemical oxidation of different aromatic hydrocarbons: dependence on NOx and organic substituents
Hao Luo
Guangdong Key Laboratory of Environmental Catalysis and Health Risk
Control, Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants
Exposure and Health, Institute of Environmental Health and Pollution
control, Guangdong University of Technology, Guangzhou 510006, China
Guangzhou Key Laboratory of Environmental Catalysis and Pollution
Control, Key Laboratory of City Cluster Environmental Safety and Green
Development, School of Environmental Science and Engineering, Guangdong
University of Technology, Guangzhou 510006, China
Jiangyao Chen
Guangdong Key Laboratory of Environmental Catalysis and Health Risk
Control, Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants
Exposure and Health, Institute of Environmental Health and Pollution
control, Guangdong University of Technology, Guangzhou 510006, China
Guangzhou Key Laboratory of Environmental Catalysis and Pollution
Control, Key Laboratory of City Cluster Environmental Safety and Green
Development, School of Environmental Science and Engineering, Guangdong
University of Technology, Guangzhou 510006, China
Guiying Li
Guangdong Key Laboratory of Environmental Catalysis and Health Risk
Control, Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants
Exposure and Health, Institute of Environmental Health and Pollution
control, Guangdong University of Technology, Guangzhou 510006, China
Guangzhou Key Laboratory of Environmental Catalysis and Pollution
Control, Key Laboratory of City Cluster Environmental Safety and Green
Development, School of Environmental Science and Engineering, Guangdong
University of Technology, Guangzhou 510006, China
Taicheng An
CORRESPONDING AUTHOR
Guangdong Key Laboratory of Environmental Catalysis and Health Risk
Control, Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants
Exposure and Health, Institute of Environmental Health and Pollution
control, Guangdong University of Technology, Guangzhou 510006, China
Guangzhou Key Laboratory of Environmental Catalysis and Pollution
Control, Key Laboratory of City Cluster Environmental Safety and Green
Development, School of Environmental Science and Engineering, Guangdong
University of Technology, Guangzhou 510006, China
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EGUsphere, https://doi.org/10.5194/egusphere-2025-3182, https://doi.org/10.5194/egusphere-2025-3182, 2025
This preprint is open for discussion and under review for Atmospheric Chemistry and Physics (ACP).
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Our research investigated how the atmospheric oxidation of alkenes from petrochemical sources generates organic acids and impacts the regional organic acid gap. Through quantum chemical calculations and reaction kinetics simulations, we found that NO in polluted atmospheres can rapidly participate in the atmospheric oxidation process of 2-butene, leading to the formation of acetic acid, the yield of which is significantly higher than current model predictions.
Weina Zhang, Jianhua Mai, Zhichao Fan, Yongpeng Ji, Yuemeng Ji, Guiying Li, Yanpeng Gao, and Taicheng An
Atmos. Chem. Phys., 24, 9019–9030, https://doi.org/10.5194/acp-24-9019-2024, https://doi.org/10.5194/acp-24-9019-2024, 2024
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This study reveals heterogeneous oxidation causes further radiative forcing effect (RFE) enhancement of amine–mineral mixed particles. Note that RFE increment is higher under clean conditions than that under polluted conditions, which is contributed to high-oxygen-content products. The enhanced RFE of amine–mineral particles caused by heterogenous oxidation is expected to alleviate warming effects.
Yuemeng Ji, Zhang Shi, Wenjian Li, Jiaxin Wang, Qiuju Shi, Yixin Li, Lei Gao, Ruize Ma, Weijun Lu, Lulu Xu, Yanpeng Gao, Guiying Li, and Taicheng An
Atmos. Chem. Phys., 24, 3079–3091, https://doi.org/10.5194/acp-24-3079-2024, https://doi.org/10.5194/acp-24-3079-2024, 2024
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The formation mechanisms for secondary brown carbon (SBrC) contributed by multifunctional reduced nitrogen compounds (RNCs) remain unclear. Hence, from combined laboratory experiments and quantum chemical calculations, we investigated the heterogeneous reactions of glyoxal (GL) with multifunctional RNCs, which are driven by four-step indirect nucleophilic addition reactions. Our results show a possible missing source for SBrC formation on urban, regional, and global scales.
Junting Qiu, Xinlin Shen, Jiangyao Chen, Guiying Li, and Taicheng An
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We studied reactions of secondary ozonides (SOZs) with amines. SOZs formed from ozonolysis of β-caryophyllene and α-humulene are found to be reactive to ethylamine and methylamine. Products from SOZs with various conformations reacting with the same amine had different functional groups. Our findings indicate that interaction of SOZs with amines in the atmosphere is very complicated, which is potentially a hitherto unrecognized source of N-containing compound formation.
Yuemeng Ji, Qiuju Shi, Xiaohui Ma, Lei Gao, Jiaxin Wang, Yixin Li, Yanpeng Gao, Guiying Li, Renyi Zhang, and Taicheng An
Atmos. Chem. Phys., 22, 7259–7271, https://doi.org/10.5194/acp-22-7259-2022, https://doi.org/10.5194/acp-22-7259-2022, 2022
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The formation mechanisms of secondary organic aerosol and brown carbon from small α-carbonyls are still unclear. Thus, the mechanisms and kinetics of aqueous-phase reactions of glyoxal were investigated using quantum chemical and kinetic rate calculations. Several essential isomeric processes were identified, including protonation to yield diol/tetrol and carbenium ions as well as nucleophilic addition of carbenium ions to diol/tetrol and free methylamine/ammonia.
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Short summary
The formation kinetics and mechanism of O3 and SOA from different AHs are still unclear. Thus the photochemical oxidation mechanism of nine AHs with NO2 is studied. Increased formation rate and yield of O3 and SOA are observed via promoting AH content. Raising the number of AH substituents enhances O3 formation but decreases SOA yield, which is promoted by increasing the methyl group number of AHs. Results help show conversion of AHs to secondary pollutants in the real atmospheric environment.
The formation kinetics and mechanism of O3 and SOA from different AHs are still unclear. Thus...
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