气候变化领域集成服务门户(CCPortal): Source forensics of n-alkanes and n-fatty acids in urban aerosols using compound specific radiocarbon/stable carbon isotopic composition

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DOI	10.1088/1748-9326/ab8333
	Source forensics of n-alkanes and n-fatty acids in urban aerosols using compound specific radiocarbon/stable carbon isotopic composition
	Ren L.; Ren L.; Wang Y.; Wang Y.; Kawamura K.; Bikkina S.; Haghipour N.; Haghipour N.; Wacker L.; Pavuluri C.M.; Zhang Z.; Yue S.; Yue S.; Sun Y.; Wang Z.; Zhang Y.; Feng X.; Liu C.-Q.; Eglinton T.I.; Fu P.
发表日期	2020
ISSN	17489318
卷号	15 期号:7
英文摘要	n-Alkanes and fatty acids are important molecular markers for the source apportionment of organic matter in the atmosphere. Traditional approaches to date have mostly relied upon the source-specific differences in their molecular distributions and carbon preference index. Alternatively, we demonstrate here the use of stable carbon and radiocarbon isotopic composition (δ 13C and Δ14C, respectively) of n-alkanes and n-fatty acids in aerosols from two urban receptor sites (Beijing and Tianjin) in Northeast China to assess their sources in autumn. The Δ14C n-alkanes of C19-C24 and C26-C32 even-carbon homologs (-851 to -708‰) indicate their dominance from fossil fuel combustion. In contrast, the Δ14C of most abundant palmitic acid (C16:0) and stearic acid (C18:0) suggest a larger contribution from nonfossil sources (∼91%-94%), mainly due to inputs from cooking, biomass burning and microorganisms. Compared with lower Δ14C of C27 and C31 n-alkanes (-449‰), C29 n-alkane (-241‰) and C20-C30 n-fatty acids (-263‰) showed more contemporary likely due to significant contribution from plant litter and biomass burning that contain more fresh biogenic material. Fossil character of C27-C31 n-alkanes (40%) and C20-C30 n-fatty acids (30%) could be from soil resuspension and/or loess deposits in upwind regions through long-range atmospheric transport. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	atmospheric aerosols; compound-specific stable carbon isotopes; n-alkanes; n-fatty acids; radiocarbon isotopes
语种	英语
scopus关键词	Aerosols; Atmospheric movements; Carbon; Forensic science; Fossil fuels; Hydrocarbons; Isotopes; Palmitic acid; Urban growth; Biogenic materials; Carbon isotopic composition; Fossil fuel combustion; Isotopic composition; Long-range atmospheric transports; Molecular distribution; Source apportionment; Traditional approaches; Paraffins; aerosol; alkane; carbon isotope; fatty acid; forensic science; isotopic composition; radionuclide; source apportionment; stable isotope; urban pollution; Beijing [China]; China; Tianjin
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153964
作者单位	Institute of Surface-Earth System Science, Tianjin University, Tianjin, 300072, China; Geological Institute, Department of Earth Sciences, Eth Zürich, Zürich, 8092, Switzerland; Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China; Chubu Institute for Advanced Studies, Chubu University, Kasugai, 487-8501, Japan; Laboratory of Ion Beam Physics, Department of Physics, Eth Zürich, Zürich, CH 8093, Switzerland; Lapc, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China; State Key Laboratory of Organic Geochemistry, Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
推荐引用方式 GB/T 7714	Ren L.,Ren L.,Wang Y.,et al. Source forensics of n-alkanes and n-fatty acids in urban aerosols using compound specific radiocarbon/stable carbon isotopic composition[J],2020,15(7).
APA	Ren L..,Ren L..,Wang Y..,Wang Y..,Kawamura K..,...&Fu P..(2020).Source forensics of n-alkanes and n-fatty acids in urban aerosols using compound specific radiocarbon/stable carbon isotopic composition.Environmental Research Letters,15(7).
MLA	Ren L.,et al."Source forensics of n-alkanes and n-fatty acids in urban aerosols using compound specific radiocarbon/stable carbon isotopic composition".Environmental Research Letters 15.7(2020).