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
作者： Zhao, Zhen 1 ; Li, Hanhan 1 ; Wei, Yaqian 1 ; Fang, Guodong 4 ; Jiang, Qian 4 ; Pang, Yuting 1 ; Huang, Weijie 1 ; Tang, Mingwei 1 ; Jing, Yuanshu 1 ; Feng, Xinyuan 1 ; Luo, Xiao-San 1 ; Berkemeier, Thomas 3 ;
作者机构： 1.Nanjing Univ Informat Sci & Technol, Int Ctr Ecol Meteorol & Environm, Sch Ecol & Appl Meteorol, Nanjing 210044, Peoples R China
2.Zhejiang Acad Agr Sci, Hangzhou 310021, Peoples R China
3.Max Planck Inst Chem, Multiphase Chem Dept, D-55128 Mainz, Germany
4.Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China
5.Zhejiang Inst Meteorol Sci, Hangzhou 310008, Peoples R China
6.Fudan Univ, Dept Environm Sci & Engn, Shanghai 200433, Peoples R China
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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