globalchange  > 影响、适应和脆弱性
DOI: 10.1016/j.atmosres.2018.08.024
Scopus记录号: 2-s2.0-85052649389
论文题名:
Saccharides in summer and winter PM2.5 over Xi'an, Northwestern China: Sources, and yearly variations of biomass burning contribution to PM2.5
作者: Wang X.; Shen Z.; Liu F.; Lu D.; Tao J.; Lei Y.; Zhang Q.; Zeng Y.; Xu H.; Wu Y.; Zhang R.; Cao J.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 214
起始页码: 410
结束页码: 417
语种: 英语
英文关键词: Biomass burning ; Levoglucosan ; Northwestern China ; PM2.5 ; Saccharides
Scopus关键词: Alcohols ; Atmospheric aerosols ; Biomass ; Factorization ; Polyols ; Sugar (sucrose) ; Biomass-burning ; Levoglucosan ; Northwestern China ; PM2.5 ; Saccharides ; Biocatalysts ; aerosol ; biomass burning ; organic compound ; particulate matter ; seasonal variation ; China ; Shaanxi ; Xian
英文摘要: Saccharides are important constituents in atmospheric aerosols but studies in northwestern China are still very limited. Here, we have measured anhydrosugars (levoglucosan, mannosan and galactosan), primary sugars (glucose, fructose, sucrose and trehalose), and sugar alcohols (arabitol, mannitol, sorbitol and inositol) in ambient PM2.5 samples during summer and winter in Xi'an city, northwestern China. The abundance of total saccharides showed no clear seasonal variation, but apparent distinctions on the levels of the three categories and individual saccharide compounds were found. Primary sugars and particularly sucrose were dominant in summer. In contrast, levoglucosan was the predominant species in winter, contributing 60% of total saccharides. Source apportionment by positive matrix factorization revealed that airborne pollen was a major source of PM2.5 associated-saccharides in summer, accounting for 35% of total saccharides; while biomass burning activities contributed to 60% of the winter saccharides. Furthermore, an increasing trend of biomass/biofuel burning contribution to winter PM2.5 was observed in comparison with previous studies in Xi'an, suggesting a change in emission sources may be underway in northwestern China. © 2018 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/108733
Appears in Collections:影响、适应和脆弱性
气候变化事实与影响

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作者单位: Department of Environmental Sciences and Engineering, Xi'an Jiaotong University, Xi'an, 710049, China; State Key laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710049, China; Multiphase Chemistry Department, Max Planck Institute for Chemistry, Mainz, 55128, Germany; South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou, China; Key Laboratory of Regional Climate-Environment Research for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China

Recommended Citation:
Wang X.,Shen Z.,Liu F.,et al. Saccharides in summer and winter PM2.5 over Xi'an, Northwestern China: Sources, and yearly variations of biomass burning contribution to PM2.5[J]. Atmospheric Research,2018-01-01,214
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