气候变化领域集成服务门户(CCPortal): Measurement report: Saccharide composition in atmospheric fine particulate matter during spring at the remote sites of southwest China and estimates of source contributions

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DOI	10.5194/acp-21-12227-2021
	Measurement report: Saccharide composition in atmospheric fine particulate matter during spring at the remote sites of southwest China and estimates of source contributions
	Wang Z.; Wu D.; Li Z.; Shang X.; Li Q.; Li X.; Chen R.; Kan H.; Ouyang H.; Tang X.; Chen J.
发表日期	2021
ISSN	1680-7316
起始页码	12227
结束页码	12241
卷号	21 期号:16
英文摘要	Based on source-specific saccharide tracers, the characteristics of biomass burning (BB) and biogenic emissions of saccharides were investigated in three rural sites at Lincang, which is 65 % covered with forest in the southwest border of China. The total saccharides accounted for 8.4 ± 2.7 % of organic carbon (OC) and 1.6 ± 0.6 % of PM2.5. The measured anhydrosugars accounted for 48.5 % of total saccharides, among which levoglucosan was the most dominant species. The high level of levoglucosan was both attributed to the local BB activities and biomass combustion smoke transported from the neighboring regions of Southeast Asia (Myanmar) and the northern Indian subcontinent. The measured mono- or disaccharides and sugar alcohols accounted for 24.9 ± 8.3 % and 26.6 ± 9.9 % of the total saccharides, respectively, and both proved to be mostly emitted by direct biogenic volatilization from plant material or surface soils rather than byproducts of polysaccharide breakdown during BB processes. Five sources of saccharides were resolved by non-negative matrix factorization (NMF) analysis, including BB, soil microbiota, plant senescence, airborne pollen, and plant detritus with contributions of 34.0 %, 16.0 %, 21.0 %, 23.7 %, and 5.3 %, respectively. The results provide information on the magnitude of levoglucosan and contributions of BB, as well as the characteristic of biogenic saccharides, at the remote sites of southwest China, which can be further applied to regional source apportionment models and global climate models. © 2021 Zhenzhen Wang et al.
语种	英语
scopus关键词	atmospheric transport; biogenic emission; biomass burning; carbohydrate; combustion; organic carbon; particulate matter; pollutant transport; smoke; source apportionment; spring (season); China; India; Myanmar; Microbiota
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246650
作者单位	Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan Tyndall Centre, Fudan University, Shanghai, 200438, China; Key Lab of Public Health Safety of the Ministry of Education, NHC Key Laboratory of Health Technology Assessment, School of Public Health, Fudan University, Shanghai, 200032, China; IRDR International Center of Excellence on Risk Interconnectivity and Governance on Weather, Climate Extremes Impact and Public Health, Institute of Atmospheric Sciences, Fudan University, Shanghai, 200438, China
推荐引用方式 GB/T 7714	Wang Z.,Wu D.,Li Z.,et al. Measurement report: Saccharide composition in atmospheric fine particulate matter during spring at the remote sites of southwest China and estimates of source contributions[J],2021,21(16).
APA	Wang Z..,Wu D..,Li Z..,Shang X..,Li Q..,...&Chen J..(2021).Measurement report: Saccharide composition in atmospheric fine particulate matter during spring at the remote sites of southwest China and estimates of source contributions.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(16).
MLA	Wang Z.,et al."Measurement report: Saccharide composition in atmospheric fine particulate matter during spring at the remote sites of southwest China and estimates of source contributions".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.16(2021).