Using delta C-13 of Levoglucosan As a Chemical Clock

doi:10.1021/acs.est.8b03054

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	Using delta C-13 of Levoglucosan As a Chemical Clock
	Gensch, I 1; Sang-Arlt, X. F.1,5; Laumer, W.1; Chan, C. Y.2; Engling, G.3,6; Rudolph, J.1,4; Kiendler-Scharr, A.1
通讯作者	Gensch, I(i.gensch@fz-juelich.de)
	2018-10-02
发表期刊	ENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN	0013-936X
卷号	52 期号:19 页码:11094-11101
摘要	Compound specific carbon isotopic measurements (delta C-13) of levoglucosan were carried out for ambient aerosol sampled during an intensive biomass burning period at different sites in Guangdong province, China. The delta C-13 of ambient levoglucosan was found to be noticeably heavier than the average delta C-13 of levoglucosan found in source C3-plant-combustion samples. To estimate the photochemical age of sampled ambient levoglucosan, back trajectory analyses were done. The origin and pathways of the probed air masses were determined, using the Lagrangian-particle-dispersion-model FLEXPART and ECMWF meteorological data. On the other hand, the isotopic hydrocarbon clock concept was applied to relate the changes in the field-measured stable carbon isotopic composition to the extent of chemical processing during transport. Comparison of the photochemical age derived using these two independent approaches shows on average good agreement, despite a substantial scatter of the individual data pairs. These analyses demonstrate that the degree of oxidative aging of particulate levoglucosan can be quantified by combining laboratory KIE studies, observed delta C-13 at the source and in the field, as well as back trajectory analyses. In this study, the chemical loss of levoglucosan was found to exceed 50% in one-fifth of the analyzed samples. Consequently, the use of levoglucosan as a stable molecular tracer may underestimate the contribution of biomass burning to air pollution.
DOI	10.1021/acs.est.8b03054
关键词[WOS]	VOLATILE ORGANIC-COMPOUNDS ; CARBON-ISOTOPE RATIOS ; AIR-QUALITY ; BIOMASS ; AEROSOL ; MASS ; TRACERS ; OH ; PARTICLES ; CELLULOSE
收录类别	SCI ; SCI
语种	英语
WOS研究方向	Engineering ; Environmental Sciences & Ecology
WOS类目	Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:000446542100022
出版者	AMER CHEMICAL SOC
引用统计	被引频次：21[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/14674
专题	加速器质谱中心
通讯作者	Gensch, I
作者单位	1.Forschungszentrum Julich, IEK Troposphere 8, D-52428 Julich, Germany 2.Chinese Acad Sci, Inst Earth Environm, Xian 710043, Shaanxi, Peoples R China 3.Natl Tsing Hua Univ, Dept Biomed Engn & Environm Sci, Hsinchu 30013, Taiwan 4.York Univ, Chem Dept, 4700 Keele St, Toronto, ON M3J 1P3, Canada 5.Untersuchungsinst Heppeler GmbH, D-79539 Lorrach, Germany 6.Calif Air Resources Board, El Monte, CA 91731 USA
推荐引用方式 GB/T 7714	Gensch, I,Sang-Arlt, X. F.,Laumer, W.,et al. Using delta C-13 of Levoglucosan As a Chemical Clock[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2018,52(19):11094-11101.
APA	Gensch, I.,Sang-Arlt, X. F..,Laumer, W..,Chan, C. Y..,Engling, G..,...&Kiendler-Scharr, A..(2018).Using delta C-13 of Levoglucosan As a Chemical Clock.ENVIRONMENTAL SCIENCE & TECHNOLOGY,52(19),11094-11101.
MLA	Gensch, I,et al."Using delta C-13 of Levoglucosan As a Chemical Clock".ENVIRONMENTAL SCIENCE & TECHNOLOGY 52.19(2018):11094-11101.