气候变化领域集成服务门户(CCPortal): Compound-Specific Stable Carbon Isotope Ratios of Terrestrial Biomarkers in Urban Aerosols from Beijing, China

CCPortal

DOI	10.1021/acsearthspacechem.9b00113
	Compound-Specific Stable Carbon Isotope Ratios of Terrestrial Biomarkers in Urban Aerosols from Beijing, China
	Ren, Lujie; Hu, Wei; Hou, Juzhi; Li, Linjie; Yue, Siyao; Sun, Yele; Wang, Zifa; Li, Xiaodong; Pavuluri, Chandra Mouli; Hou, Shengjie; Liu, Cong-Qiang; Kawamura, Kimitaka; Ellam, Robert Mark; Fu, Pingqing
通讯作者	Fu, PQ (通讯作者)
发表日期	2019
ISSN	2472-3452
起始页码	1896
结束页码	1904
卷号	3 期号:9
英文摘要	Molecular compositions and stable carbon isotope ratios (PC) of n-alkanes and fatty acids (FA) were investigated in urban aerosols from Beijing, China. Seasonal trends for n-alkanes showed a higher carbon preference index (CPI) and C-max at C-29 in spring indicating the enhanced emission of higher plant waxes. Lower CPIs and C-max at C-23 were found in winter that should be associated with fossil fuel combustion. C-13-depletion in C-29 n-alkane was observed during an extreme rainfall event, during which the inflow of air masses were originated from lower latitude regions. Higher concentrations of C-13-enriched C-23 n-alkane in winter together with the air mass trajectories suggested that the Beijing aerosols were affected by the air masses transported from the southern regions. Fatty acids were abundant in fall and showed a bimodal pattern with C(max )at C-16(:0) and C-18(:0). Higher C-24(:0)/FA ratios with C-13-enrichment occurred as influenced by southerly air masses, and lower C-24(:0)/FA ratios with C-13-depletion was observed with northerly air masses in fall and winter. These results suggested that C-24(:0) fatty acid was more abundantly transported from the southwestern air masses and may be a powerful tool to distinguish polluted aerosol source regions. Moreover, the delta C-13 values of C-24(:0) fatty acid showed a positive correlation with levoglucosan, implying that the biomass-burning process may contribute C-13-enriched C-2(4:0) fatty acid.
关键词	ELEVATED ATMOSPHERIC CO2 INDIVIDUAL FATTY-ACIDS WESTERN NORTH PACIFIC FINE ORGANIC AEROSOL N-ALKANES MARINE AEROSOLS SOURCE REGIONS EAST CHINA MATTER TROPOSPHERE
英文关键词	Urban aerosols; Compound-specific stable carbon isotopes; n-Alkanes; Fatty acids; Levoglucosan
语种	英语
WOS研究方向	Chemistry ; Geochemistry & Geophysics
WOS类目	Chemistry, Multidisciplinary ; Geochemistry & Geophysics
WOS记录号	WOS:000487179500016
来源期刊	ACS EARTH AND SPACE CHEMISTRY
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/259607
推荐引用方式 GB/T 7714	Ren, Lujie,Hu, Wei,Hou, Juzhi,et al. Compound-Specific Stable Carbon Isotope Ratios of Terrestrial Biomarkers in Urban Aerosols from Beijing, China[J]. 中国科学院青藏高原研究所,2019,3(9).
APA	Ren, Lujie.,Hu, Wei.,Hou, Juzhi.,Li, Linjie.,Yue, Siyao.,...&Fu, Pingqing.(2019).Compound-Specific Stable Carbon Isotope Ratios of Terrestrial Biomarkers in Urban Aerosols from Beijing, China.ACS EARTH AND SPACE CHEMISTRY,3(9).
MLA	Ren, Lujie,et al."Compound-Specific Stable Carbon Isotope Ratios of Terrestrial Biomarkers in Urban Aerosols from Beijing, China".ACS EARTH AND SPACE CHEMISTRY 3.9(2019).