Using delta C-13 of Levoglucosan As a Chemical Clock
文献类型：期刊论文
| 作者 | Gensch, I1; Sang-Arlt, X. F.1,6; Laumer, W.1; Chan, C. Y.3; Engling, G.2,4; Rudolph, J.1,5; Kiendler-Scharr, A.1 |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 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 |
| 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.Forschungszentrum Julich, IEK Troposphere 8, D-52428 Julich, Germany 2.Calif Air Resources Board, El Monte, CA 91731 USA 3.Chinese Acad Sci, Inst Earth Environm, Xian 710043, Shaanxi, Peoples R China 4.Natl Tsing Hua Univ, Dept Biomed Engn & Environm Sci, Hsinchu 30013, Taiwan 5.York Univ, Chem Dept, 4700 Keele St, Toronto, ON M3J 1P3, Canada 6.Untersuchungsinst Heppeler GmbH, D-79539 Lorrach, Germany |
| 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. |
入库方式： OAI收割
来源：地球环境研究所
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