Molecular distributions and compound-specific stable carbon isotopic compositions of lipids in wintertime aerosols from Beijing
文献类型：SCI/SSCI论文
| 作者 | Ren L. J.; Fu, P. Q.; He, Y.; Hou, J. Z.; Chen, J. ; Pavuluri, C. M.; Sun, Y. L.; Wang, Z. F.
|
| 发表日期 | 2016 |
| 关键词 | fine organic aerosol polycyclic aromatic-hydrocarbons western north pacific n-alkanes fatty-acids atmospheric transport marine aerosols harmattan aerosols united-states china |
| 英文摘要 | Molecular distributions and stable carbon isotopic compositions (delta C-13) of n-alkanes, fatty acids and n-alcohols were investigated in urban aerosols from Beijing, northern China to better understand the sources and long-range atmospheric transport of terrestrial organic matter during polluted and clear days in winter. n-Alkanes (C-19-C-36), fatty acids (C-8-C-32) and n-alcohols (C-16-C-32) detected in Beijing aerosols are characterized by the predominance of C-23, C-16 and C-28, respectively. Carbon preference index (CPI) values of n-alkanes, the ratios of the sum of odd-numbered n-alkanes to the sum of even-numbered n-alkanes, are close to 1, indicating a heavy influence of fossil fuel combustion. Relatively higher ratios of C(18:0+16:0)/C(18:n+16:1) (fatty acids) on clear days than polluted days indicate that long-distance transport and/or photochemical aging are more significant during clear days. delta C-13 values of n-alkanes and low molecular weight fatty acids (C-16:0, C-18:0) ranged from -34.1 to -24.7% and -26.9 to -24.6%, respectively, which are generally heavier on polluted days than those on clear days. Such a wide range suggests that atmospheric lipids in Beijing aerosols originate from multiple sources and encounter complicated atmospheric processes during long-range transport in North China. |
| 出处 | Scientific Reports |
| 卷 | 6 |
| 语种 | 英语 |
| ISSN号 | 2045-2322 |
| DOI标识 | 10.1038/srep27481 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/42778]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Ren L. J.,Fu, P. Q.,He, Y.,et al. Molecular distributions and compound-specific stable carbon isotopic compositions of lipids in wintertime aerosols from Beijing. 2016. |
入库方式： OAI收割
来源：地理科学与资源研究所
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