globalchange  > 气候变化事实与影响
DOI: 10.1016/j.atmosenv.2018.04.046
Scopus记录号: 2-s2.0-85046125831
论文题名:
Rapid determination of environmentally persistent free radicals (EPFRs) in atmospheric particles with a quartz sheet-based approach using electron paramagnetic resonance (EPR) spectroscopy
作者: Chen Q; , Wang M; , Wang Y; , Zhang L; , Xue J; , Sun H; , Mu Z
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 184
起始页码: 140
结束页码: 145
语种: 英语
英文关键词: Air pollution ; Electron paramagnetic resonance ; Environmentally persistent free radicals ; PM2.5 ; Quantitative determination
Scopus学科分类: Environmental Science: Water Science and Technology ; Earth and Planetary Sciences: Earth-Surface Processes ; Environmental Science: Environmental Chemistry
英文摘要: Environmentally persistent free radicals (EPFRs) are present within atmospheric fine particles, and they are assumed to be a potential factor responsible for human pneumonia and lung cancer. This study presents a new method for the rapid quantification of EPFRs in atmospheric particles with a quartz sheet-based approach using electron paramagnetic resonance (EPR) spectroscopy. The three-dimensional distributions of the relative response factors in a cavity resonator were simulated and utilized for an accurate quantitative determination of EPFRs in samples. Comparisons between the proposed method and conventional quantitative methods were also performed to illustrate the advantages of the proposed method. The results suggest that the reproducibility and accuracy of the proposed method are superior to those of the quartz tube-based method. Although the solvent extraction method is capable of extracting specific EPFR species, the developed method can be used to determine the total EPFR content; moreover, the analysis process of the proposed approach is substantially quicker than that of the solvent extraction method. The proposed method has been applied in this study to determine the EPFRs in ambient PM2.5 samples collected over Xi'an, the results of which will be useful for extensive research on the sources, concentrations, and physical-chemical characteristics of EPFRs in the atmosphere. © 2018 Elsevier Ltd
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被引频次[WOS]:34   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82848
Appears in Collections:气候变化事实与影响

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作者单位: School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi'an, China; Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan; School of Economics and Management, Shaanxi University of Science and Technology, Xi'an, China

Recommended Citation:
Chen Q,, Wang M,, Wang Y,et al. Rapid determination of environmentally persistent free radicals (EPFRs) in atmospheric particles with a quartz sheet-based approach using electron paramagnetic resonance (EPR) spectroscopy[J]. Atmospheric Environment,2018-01-01,184
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