Non-negligible contribution of high-level volatile sulphur compounds to ozone photochemical formation in an industry zone in the North China Plain

IF 2.9 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Air Quality Atmosphere and Health Pub Date : 2023-12-08 DOI:10.1007/s11869-023-01479-x

Xue Yang, Shuhao Hu, Gen Zhang, Lingjie Li, Shiyang Zhao, Guiqin Zhang

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Abstract

The increasing amount of ozone (O₃) pollution in China is attracting extensive scientific attention globally. This study presents direct evidence that high concentrations of volatile sulphur compounds (VSCs) accelerate the photochemical production of O₃. We analysed three high O₃ cases (Cases I, II, and III) in which the O₃ concentrations were high but the compositions of O₃ precursors differed. An analysis of the O₃ precursors and the magnitudes of the associated ROx (ROx = ·OH + ·HO₂ + ·RO₂) reactivities amongst three cases revealed that VSCs may play an important role in O₃ production. Case I showed high loadings of VSCs, mainly dimethyl sulphide (DMS), and the simulated diurnal average concentration of radicals and the net O₃ production rate were higher than those in Cases II and III, reflecting the higher photochemical reactivity and oxidation capacity of Case I. Although O₃ was mainly produced from the oxidation of aromatics in all cases, the oxidation of DMS was an important contributor to O₃ formation in Case I (14%) and Case III (25%). The combined analyses indicated the contribution of DMS to O₃ production in industrial areas and suggested the urgent need to measure related VSCs during field campaigns in another atmospheric environment to verify this phenomenon.

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高浓度挥发性硫化物对华北平原工业区臭氧光化学形成的贡献不可忽略

中国日益严重的臭氧（O3）污染正引起全球科学界的广泛关注。本研究提出了高浓度挥发性硫化物（VSCs）会加速 O3 光化学生成的直接证据。我们分析了三个高臭氧浓度的案例（案例 I、II 和 III），在这三个案例中，臭氧浓度都很高，但臭氧前体的成分各不相同。对三种情况下的 O3 前体和相关 ROx（ROx = -OH + -HO2 + -RO2）反应活性大小的分析表明，VSC 可能在 O3 生成过程中发挥了重要作用。虽然在所有情况下，O3 主要由芳烃氧化产生，但在情况 I（14%）和情况 III（25%）中，DMS 的氧化是 O3 形成的重要因素。综合分析表明，二甲基亚砜对工业区的 O3 生成有贡献，并建议迫切需要在另一种大气环境下的实地活动中测量相关的 VSCs，以验证这一现象。

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来源期刊

Air Quality Atmosphere and Health ENVIRONMENTAL SCIENCES-

CiteScore

8.80

自引率

2.00%

发文量

146

审稿时长

>12 weeks

期刊介绍： Air Quality, Atmosphere, and Health is a multidisciplinary journal which, by its very name, illustrates the broad range of work it publishes and which focuses on atmospheric consequences of human activities and their implications for human and ecological health. It offers research papers, critical literature reviews and commentaries, as well as special issues devoted to topical subjects or themes. International in scope, the journal presents papers that inform and stimulate a global readership, as the topic addressed are global in their import. Consequently, we do not encourage submission of papers involving local data that relate to local problems. Unless they demonstrate wide applicability, these are better submitted to national or regional journals. Air Quality, Atmosphere & Health addresses such topics as acid precipitation; airborne particulate matter; air quality monitoring and management; exposure assessment; risk assessment; indoor air quality; atmospheric chemistry; atmospheric modeling and prediction; air pollution climatology; climate change and air quality; air pollution measurement; atmospheric impact assessment; forest-fire emissions; atmospheric science; greenhouse gases; health and ecological effects; clean air technology; regional and global change and satellite measurements. This journal benefits a diverse audience of researchers, public health officials and policy makers addressing problems that call for solutions based in evidence from atmospheric and exposure assessment scientists, epidemiologists, and risk assessors. Publication in the journal affords the opportunity to reach beyond defined disciplinary niches to this broader readership.