Using delta C-13 of Levoglucosan As a Chemical Clock | |
Gensch, I2; Sang-Arlt, X. F.2,5; Laumer, W.2; Chan, C. Y.1; Engling, G.3,6; Rudolph, J.2,4; Kiendler-Scharr, A.2 | |
刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY |
2018-10-02 | |
卷号 | 52期号:19页码:11094-11101 |
ISSN号 | 0013-936X |
DOI | 10.1021/acs.est.8b03054 |
通讯作者 | Gensch, I(i.gensch@fz-juelich.de) |
英文摘要 | 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. |
WOS关键词 | VOLATILE ORGANIC-COMPOUNDS ; CARBON-ISOTOPE RATIOS ; AIR-QUALITY ; BIOMASS ; AEROSOL ; MASS ; TRACERS ; OH ; PARTICLES ; CELLULOSE |
WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
语种 | 英语 |
出版者 | AMER CHEMICAL SOC |
WOS记录号 | WOS:000446542100022 |
内容类型 | 期刊论文 |
源URL | [http://ir.ieecas.cn/handle/361006/14673] |
专题 | 地球环境研究所_加速器质谱中心 |
通讯作者 | Gensch, I |
作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, Xian 710043, Shaanxi, Peoples R China 2.Forschungszentrum Julich, IEK Troposphere 8, D-52428 Julich, Germany 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. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论