Airborne environmentally persistent free radicals (EPFRs) in PM2.5 from combustion sources: Abundance, cytotoxicity and potential exposure risks

文献类型： 外文期刊

第一作者： Zhao, Zhen

作者： Zhao, Zhen;Li, Hanhan;Wei, Yaqian;Pang, Yuting;Huang, Weijie;Tang, Mingwei;Jing, Yuanshu;Feng, Xinyuan;Luo, Xiao-San;Zhao, Zhen;Zhao, Zhen;Berkemeier, Thomas;Fang, Guodong;Jiang, Qian;Pang, Yuting;Huang, Weijie

作者机构：

关键词： EPFRs; Combustion sources; Health risks; ROS generation; Cytotoxicity

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：9.8； 五年影响因子：9.6 ）

ISSN： 0048-9697

年卷期： 2024 年 927 卷

页码：

收录情况： SCI

摘要： As an emerging atmospheric pollutant, airborne environmentally persistent free radicals (EPFRs) are formed during many combustion processes and pose various adverse health effects. In health-oriented air pollution control, it is vital to evaluate the health effects of atmospheric fine particulate matter (PM 2.5 ) from different emission sources. In this study, various types of combustion-derived PM 2.5 were collected on filters in a partialflow dilution tunnel sampling system from three typical emission sources: coal combustion, biomass burning, and automobile exhaust. Substantial concentrations of EPFRs were determined in PM 2.5 samples and associated with significant potential exposure risks. Results from in vitro cytotoxicity and oxidative potential assays suggest that EPFRs may cause substantial generation of reactive oxygen species (ROS) upon inhalation exposure to PM 2.5 from anthropogenic combustion sources, especially from automobile exhaust. This study provides important evidence for the source- and concentration -dependent health effects of EPFRs in PM 2.5 and motivates further assessments to advance public health -oriented PM 2.5 emission control.

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