Characterization of secondary organic aerosol from photo-oxidation of gasoline exhaust and specific sources of major components
文献类型：期刊论文
| 作者 | Zhang, Peng; Shu, Jinian; Yang, Bo; Zhang, Haixu; Ma, Pengkun |
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2018 |
| 卷号 | 232页码:65-72 |
| ISSN号 | 0269-7491 |
| 关键词 | Exhaust C-7-C-9 light aromatic mixture Chemical composition Relative distribution |
| 文献子类 | Article |
| 英文摘要 | To further explore the composition and distribution of secondary organic aerosol (SOA) components from the photo-oxidation of light aromatic precursors (toluene, m-xylene, and 1,3,5-trimethylbenzene (1,3,5-TMB)) and idling gasoline exhaust, a vacuum ultraviolet photoionization mass spectrometer (VUV-PIMS) was employed. Peaks of the molecular ions of the SOA components with minimum molecular fragmentation were clearly observed from the mass spectra of SOA, through the application of soft ionization methods in VUV-PIMS. The experiments comparing the exhaust-SOA and light aromatic mixture-SOA showed that the observed distributions of almost all the predominant cluster ions in the exhaust-SOA were similar to that of the mixture-SOA. Based on the characterization experiments of SOA formed from individual light aromatic precursors, the SOA components with molecular weights of 98 and 110 amu observed in the exhaust-SOA resulted from the photo-oxidation of toluene and m-xylene; the components with a molecular weight of 124 amu were derived mainly from m-xylene; and the components with molecular weights of 100, 112, 128, 138, and 156 amu were mainly derived from 1,3,5-TMB. These results suggest that C-7-C-9 light aromatic hydrocarbons are significant SOA precursors and that major SOA components originate from gasoline exhaust. Additionally, some new light aromatic hydrocarbon-SOA components were observed for the first time using VUV-PIMS. The corresponding reaction mechanisms were also proposed in this study to enrich the knowledge base of the formation mechanisms of light aromatic hydrocarbon-SOA compounds. (C) 2017 Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/41119]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhang, Peng,Shu, Jinian,Yang, Bo,et al. Characterization of secondary organic aerosol from photo-oxidation of gasoline exhaust and specific sources of major components[J]. ENVIRONMENTAL POLLUTION,2018,232:65-72. |
| APA | Zhang, Peng,Shu, Jinian,Yang, Bo,Zhang, Haixu,&Ma, Pengkun.(2018).Characterization of secondary organic aerosol from photo-oxidation of gasoline exhaust and specific sources of major components.ENVIRONMENTAL POLLUTION,232,65-72. |
| MLA | Zhang, Peng,et al."Characterization of secondary organic aerosol from photo-oxidation of gasoline exhaust and specific sources of major components".ENVIRONMENTAL POLLUTION 232(2018):65-72. |
入库方式： OAI收割
来源：生态环境研究中心
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