增强的氮化学促进了氯化学对冬季臭氧形成的贡献增加

IF 10.8 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

环境科学与技术 Pub Date : 2024-11-25 DOI:10.1021/acs.est.4c09523

Gaojie Chen, Lingling Xu, Shaocai Yu, Likun Xue, Ziyi Lin, Chen Yang, Xiaoting Ji, Xiaolong Fan, Yee Jun Tham, Haichao Wang, Youwei Hong, Mengren Li, John H. Seinfeld, Jinsheng Chen

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引用次数: 0

摘要

氯（Cl）自由基对大气氧化和污染物的归宿有很大影响。尽管已观察到一些现象，但人们对与二氧化氮相关的氮化学对 Cl 化学的潜在影响还知之甚少。在这里，我们提供了直接的实地证据，证明二氧化氮增加所引发的氮化学增强推动了白天的硝酸盐（NO3-）光解和夜间的NO3-N2O5反应，显著促进了春节后ClNO2和Cl2浓度的增加。Cl 化学性质的增强促进了冬季白天 O3 和大气氧化能力的提高。我们的研究结果凸显了二氧化氮增加所引起的氮化学反应在增强 Cl 化学反应中的重要性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Increasing Contribution of Chlorine Chemistry to Wintertime Ozone Formation Promoted by Enhanced Nitrogen Chemistry

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Increasing Contribution of Chlorine Chemistry to Wintertime Ozone Formation Promoted by Enhanced Nitrogen Chemistry

Chlorine (Cl) radicals strongly affect atmospheric oxidation and the fate of pollutants. Despite several observations, the potential impacts of nitrogen chemistry associated with NO₂ on Cl chemistry are poorly understood. Here, we provided direct field evidence that the nitrogen chemistry enhancements triggered by the increased NO₂ drove daytime nitrate (NO₃^–) photolysis and nighttime NO₃–N₂O₅ reactions, significantly promoting the increases in the concentrations of ClNO₂ and Cl₂ after the Chinese Spring Festival. The enhancement in the Cl chemistry facilitated the elevations of both O₃ and atmospheric oxidation capacity during the winter daytime. Our findings highlighted the importance of nitrogen chemistry induced by the increased NO₂ in enhanced Cl chemistry.

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来源期刊

环境科学与技术环境科学-工程：环境

CiteScore

17.50

自引率

9.60%

发文量

12359

审稿时长

2.8 months

期刊介绍： Environmental Science & Technology (ES&T) is a co-sponsored academic and technical magazine by the Hubei Provincial Environmental Protection Bureau and the Hubei Provincial Academy of Environmental Sciences. Environmental Science & Technology (ES&T) holds the status of Chinese core journals, scientific papers source journals of China, Chinese Science Citation Database source journals, and Chinese Academic Journal Comprehensive Evaluation Database source journals. This publication focuses on the academic field of environmental protection, featuring articles related to environmental protection and technical advancements.