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| DOI | 10.5194/acp-20-6803-2020 |
| Molecular characterization of firework-related urban aerosols using Fourier transform ion cyclotron resonance mass spectrometry | |
| Xie Q.; Xie Q.; Su S.; Chen S.; Xu Y.; Cao D.; Chen J.; Ren L.; Yue S.; Yue S.; Yue S.; Zhao W.; Zhao W.; Sun Y.; Wang Z.; Tong H.; Su H.; Cheng Y.; Kawamura K.; Jiang G.; Fu P. | |
| 发表日期 | 2020 |
| ISSN | 16807316 |
| 起始页码 | 6803 |
| 结束页码 | 6820 |
| 卷号 | 20期号:11 |
| 英文摘要 | Firework (FW) emission has strong impacts on air quality and public health. However, little is known about the molecular composition of FW-related airborne particulate matter (PM), especially the organic fraction. Here we describe the detailed molecular composition of Beijing PM collected before, during, and after a FW event in the evening of New Year's Eve in 2012. Subgroups of CHO, CHON, and CHOS were characterized using ultrahigh-resolution Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry. These subgroups comprise a substantial fraction of aromatic-like compounds with low O=C ratio and high degrees of unsaturation, some of which plausibly contributed to the formation of brown carbon in Beijing PM. Moreover, we found that the number concentration of sulfur-containing compounds, especially the organosulfates, increased dramatically during the FW event, whereas the number concentration of CHO and CHON doubled after the event, which was associated with multiple atmospheric aging processes including the multiphase redox chemistry driven by NOx, O3, and •OH. These findings highlight that FW emissions can lead to a sharp increase in high-molecular-weight compounds, particularly aromatic-like substances in urban particulate matter, which may affect the light absorption properties and adverse health effects of atmospheric aerosols. © 2020 Author(s). This work is distributed under the Creative Commons Attribution 4.0 License. |
| 关键词 | aerosolconcentration (composition)Fourier transformmass spectrometrymolecular analysisparticulate matterurban atmosphereBeijing [Beijing (ADS)]Beijing [China]China |
| 语种 | 英语 |
| 来源机构 | Atmospheric Chemistry and Physics |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/131978 |
| 推荐引用方式 GB/T 7714 | Xie Q.,Xie Q.,Su S.,et al. Molecular characterization of firework-related urban aerosols using Fourier transform ion cyclotron resonance mass spectrometry[J]. Atmospheric Chemistry and Physics,2020,20(11). |
| APA | Xie Q..,Xie Q..,Su S..,Chen S..,Xu Y..,...&Fu P..(2020).Molecular characterization of firework-related urban aerosols using Fourier transform ion cyclotron resonance mass spectrometry.,20(11). |
| MLA | Xie Q.,et al."Molecular characterization of firework-related urban aerosols using Fourier transform ion cyclotron resonance mass spectrometry".20.11(2020). |
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