气候变化领域集成服务门户(CCPortal): Molecular distributions and compound-specific stable carbon isotopic compositions of lipids in wintertime aerosols from Beijing

CCPortal

DOI	10.1038/srep27481
	Molecular distributions and compound-specific stable carbon isotopic compositions of lipids in wintertime aerosols from Beijing
	Ren, Lujie; Fu, Pingqing; He, Yue; Hou, Juzhi; Chen, Jing; Pavuluri, Chandra Mouli; Sun, Yele; Wang, Zifa
通讯作者	Fu, PQ (通讯作者)
发表日期	2016
ISSN	2045-2322
卷号	6
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.
关键词	FINE ORGANIC AEROSOL POLYCYCLIC AROMATIC-HYDROCARBONS WESTERN NORTH PACIFIC N-ALKANES FATTY-ACIDS MARINE AEROSOLS URBAN MATTER TERRESTRIAL COMBUSTION
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000377463200002
来源期刊	SCIENTIFIC REPORTS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258810
推荐引用方式 GB/T 7714	Ren, Lujie,Fu, Pingqing,He, Yue,et al. Molecular distributions and compound-specific stable carbon isotopic compositions of lipids in wintertime aerosols from Beijing[J]. 中国科学院青藏高原研究所,2016,6.
APA	Ren, Lujie.,Fu, Pingqing.,He, Yue.,Hou, Juzhi.,Chen, Jing.,...&Wang, Zifa.(2016).Molecular distributions and compound-specific stable carbon isotopic compositions of lipids in wintertime aerosols from Beijing.SCIENTIFIC REPORTS,6.
MLA	Ren, Lujie,et al."Molecular distributions and compound-specific stable carbon isotopic compositions of lipids in wintertime aerosols from Beijing".SCIENTIFIC REPORTS 6(2016).