Characterization and Source Apportionment Analysis of PM_2.5 and Ozone Pollution over Fenwei Plain, China: Insights from PM_2.5 Component and VOC Observations.

IF 3.9 3区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Toxics Pub Date : 2025-02-06 DOI:10.3390/toxics13020123

Litian Xu, Bo Wang, Ying Wang, Huipeng Zhang, Danni Xu, Yibing Zhao, Kaihui Zhao

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引用次数: 0

Abstract

PM_2.5 and volatile organic compounds (VOCs) have been identified as the primary air pollutants affecting the Fenwei Plain (FWP), necessitating urgent measures to improve its air quality. To gain a deeper understanding of the formation mechanisms of these pollutants, this study employed various methods such as HYSPLIT, PCT, and PMF for analysis. Our results indicate that the FWP is primarily impacted by PM_2.5 from the southern Shaanxi air mass and the northwestern air mass during winter. In contrast, during summer, it is mainly influenced by O₃ originating from the southern air mass. Specifically, high-pressure fronts are the dominant weather pattern affecting PM_2.5 pollution in the FWP, while high-pressure backs predominately O₃ pollution. Regarding the sources of PM_2.5, secondary nitrates, vehicle exhausts, and secondary sulfates are major contributors. As for volatile organic compounds, liquefied petroleum gas sources, vehicle exhausts, solvent usage, and industrial emissions are the primary sources. This study holds crucial scientific significance in enhancing the regional joint prevention and control mechanism for PM_2.5 and O₃ pollution, and it provides scientific support for formulating effective strategies for air pollution prevention and control.

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来源期刊

Toxics Chemical Engineering-Chemical Health and Safety

CiteScore

4.50

自引率

10.90%

发文量

681

审稿时长

6 weeks

期刊介绍： Toxics (ISSN 2305-6304) is an international, peer-reviewed, open access journal which provides an advanced forum for studies related to all aspects of toxic chemicals and materials. It publishes reviews, regular research papers, and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in detail. There is, therefore, no restriction on the maximum length of the papers, although authors should write their papers in a clear and concise way. The full experimental details must be provided so that the results can be reproduced. Electronic files or software regarding the full details of calculations and experimental procedure can be deposited as supplementary material, if it is not possible to publish them along with the text.