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Waste Disposal & Sustainable Energy
Waste Disposal & Sustainable Energy  2019, Vol. 1 Issue (3): 177-197    DOI: 10.1007/s42768-019-00021-z
    
综述：PM2.5中的环境持久性自由基
Mengxia Xu1,2, Tao Wu1,2, Yu‑Ting Tang3, Tong Chen4, Lavrent Khachatryan5, Poornima Ramesh Iyer1, Dengting Guo1,  Anran Chen1, Miao Lyu1, Jinhu Li1, Jiaqi Liu1, Dan Li1, Yuxin Zuo1, Shihan Zhang1, Yiran Wang1, Yining Meng1, Fei Qi1
1 Department of Chemical and Environmental Engineering, University of Nottingham Ningbo China, Ningbo 315100, China
2 New Materials Institute, University of Nottingham Ningbo China, Ningbo 315100, China
3 School of Geographical Sciences, University of Nottingham Ningbo China, Ningbo 315100, China
4 State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China
5 Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803, USA
Environmentally persistent free radicals in PM2.5: a review
Mengxia Xu1,2, Tao Wu1,2, Yu?Ting Tang3, Tong Chen4, Lavrent Khachatryan5, Poornima Ramesh Iyer1, Dengting Guo1,  Anran Chen1, Miao Lyu1, Jinhu Li1, Jiaqi Liu1, Dan Li1, Yuxin Zuo1, Shihan Zhang1, Yiran Wang1, Yining Meng1, Fei Qi1
1 Department of Chemical and Environmental Engineering, University of Nottingham Ningbo China, Ningbo 315100, China
2 New Materials Institute, University of Nottingham Ningbo China, Ningbo 315100, China
3 School of Geographical Sciences, University of Nottingham Ningbo China, Ningbo 315100, China
4 State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China
5 Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803, USA
 全文: PDF 
摘要： 环境持久性自由基（EPFRs）是一类在细颗粒物（PM2.5）中长期存在的新型污染物，其1/e寿命从天到月（甚至无限）不等。它们能够产生有害的活性氧，如羟基自由基。EPFRs的氧化还原循环被认为是PM2.5在人体内诱导氧化应激的重要途径，从而引起呼吸和心血管疾病等不良的健康影响。因此，关于PM2.5的毒性、形成和环境发生的研究在过去的二十年中引起了全球的广泛关注。然而，这一领域的文献资料仍然十分有限和分散。因此，迫切需要进行广泛的综述，以总结目前对这一专题的理解。本文系统地综述了PM2.5中EPFRs的分析方法、环境事件（如类型、浓度、衰减行为）以及可能的来源。详细讨论了预处理方法的类型、常用EPFRs的g值和衰变过程的种类。此外，还努力重新查阅已发表的大气颗粒物EPFRs研究工作的原始数据，并尽可能为比较提供额外的有用信息，例如g值的平均值和标准偏差、线宽（?Hp-p）和浓度。最后，强调了可能的研究机会，以进一步提高我们对这一新问题的认识。
关键词： 环境持久性自由基;  PM2.5;  g-值;  线宽;  衰变;  来源    
Abstract: Environmentally persistent free radicals (EPFRs) are a new class of pollutants that are long-lived in fine particles (PM2.5), i.e., their 1/e lifetime ranges from days to months (or even infinite). They are capable of producing harmful reactive oxygen species such as hydroxyl radicals. The redox cycling of EPFRs is considered as an important pathway for PM2.5 to induce oxidative stress inside the humans, causing adverse health effects such as respiratory and cardiovascular diseases. Consequently, research regarding their toxicity, formation and environmental occurrences in PM2.5 has attracted increasing attentions globally during the past two decades. However, literature data in this field remain quite limited and discrete. Hence, an extensive review is urgently needed to summarize the current understanding of this topic. In this work, we systematically reviewed the analytical methods and environmental occurrences, e.g., types, concentrations, and decay behaviors, as well as possible sources of EPFRs in PM2.5. The types of pretreatment methods, g-values of common EPFRs and categories of decay processes were discussed in detail. Moreover, great efforts were made to revisit the original data of the published works of EPFRs in airborne particulate matter and provided additional useful information for comparison where possible, e.g., their mean and standard deviation of g-values, line widths (?Hp-p), and concentrations. Finally, possible research opportunities were highlighted to further advance our knowledge of this emerging issue.
Key words: Environmentally persistent free radical    PM2.5    g-Value    Line width    Decay    Source
收稿日期: 2019-09-24 出版日期: 2020-01-14
通讯作者: Mengxia Xu, Tong Chen, Lavrent Khachatryan     E-mail: mengxia.xu@nottingham.edu.cn; chentong@zju.edu.cn; lkhach1@lsu.edu
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引用本文:

Mengxia Xu, Tao Wu, Yu‑Ting Tang, Tong Chen, Lavrent Khachatryan, Poornima Ramesh Iyer, Dengting Guo, Anran Chen, Miao Lyu, Jinhu Li, Jiaqi Liu, Dan Li, Yuxin Zuo, Shihan Zhang, Yiran Wang, Yining Meng, Fei Qi. Environmentally persistent free radicals in PM2.5: a review. Waste Disposal & Sustainable Energy, 2019, 1(3): 177-197.

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http://www.zjujournals.com/wdse/CN/10.1007/s42768-019-00021-z    或    http://www.zjujournals.com/wdse/CN/Y2019/V1/I3/177

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