沙尘中的主要矿物组分在城市大气臭氧形成中的作用

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  • 1. 中国气象局乌鲁木齐沙漠气象研究所, 乌鲁木齐 830002; 2. 上海大学 环境与化学工程学院, 上海 200444; 3. 日本埼玉环境科学国际中心, 埼玉 374-0115, 日本
女, 助理研究员, 博士, 研究方向为大气化学.

收稿日期: 2024-09-06

  网络出版日期: 2025-04-30

基金资助

中国沙漠气象科学研究基金资助项目 (Sqj2021023); 新疆自治区自然科学基金资助项目 (2022D01A364)

Role of main mineral components of dust particles in O3 formation in urban air

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  • 1. Institute of Desert Meteorology, China Meteorological Administration, Urumqi 830002, China; 2. School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China; 3. Center for Environmental Science in Saitama, Saitama 374-0115, Japan

Received date: 2024-09-06

  Online published: 2025-04-30

摘要

沙尘在传输过程中会吸附大量的气态污染物, 且吸附在颗粒物表面的气态组分在非均相大气化学过程中对臭氧 (O3) 的生成有直接贡献. 由于不同矿物组分的吸附能力、氧化潜能(oxidative potential, OP) 等物化特性存在差异, 结合观测数据、研究结论和已有的文献报道,对沙尘中的矿物组分在大气O3 生成过程中的机制进行了总结分析, 明确了沙尘组分中的重金属元素及主要矿物组分 (如石英等矿物) 赋存 OP 在气态污染物的大气化学过程中有重要作用, 并对未来的相关研究提出了前瞻性建议.

本文引用格式

路嘉宽, 吕森林, 牛何晶英, 赵九梅, 侯国庆, 刘新春, 米持真一 . 沙尘中的主要矿物组分在城市大气臭氧形成中的作用[J]. 上海大学学报(自然科学版), 2025 , 31(2) : 264 -273 . DOI: 10.12066/j.issn.1007-2861.2649

Abstract

Dust particles adsorb a large amount of gaseous pollutant during their transport in air, and the gaseous components adsorbed on the surface of particulate matter could directly contribute to O3 generation via heterogeneous atmospheric chemical reactions. The mechanisms through which dust aerosols affect the generation of urban atmospheric O3 are complex as the physical and chemical properties such as absorption capacity and oxidative potential (OP) of the mineral compositions widely differ. In this work, the mechanisms were summarized and analyzed based on field observation data, research conclusions, and reports in the literature. It was found that the heavy metals and main mineral components (e.g. quartz) in dust stored OP and played important roles in the atmospheric chemical reactions involving gaseous pollutants. Suggestions for future researches were also proposed.
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