DOI: 10.1016/j.atmosenv.2015.05.005
Scopus记录号: 2-s2.0-84929645692
论文题名: Chemical characteristics and light-absorbing property of water-soluble organic carbon in Beijing: Biomass burning contributions
作者: Yan C ; , Zheng M ; , Sullivan A ; P ; , Bosch C ; , Desyaterik Y ; , Andersson A ; , Li X ; , Guo X ; , Zhou T ; , Gustafsson O ; , Collett J ; L
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 121 语种: 英语
英文关键词: Biomass burning
; Levoglucosan
; Light absorption
; Saccharides
; WSOC
Scopus关键词: Aerosols
; Atmospheric aerosols
; Atmospheric chemistry
; Biomass
; Carbon
; Electromagnetic wave absorption
; Housing
; Light absorption
; Particulate emissions
; Sugars
; Urban growth
; Biomass-burning
; Chemical characteristic
; Fine particulate matter
; Levoglucosan
; Light absorption coefficients
; Saccharides
; Water-soluble organic carbon
; WSOC
; Organic carbon
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Emissions from biomass burning contribute significantly to water-soluble organic carbon (WSOC) and light-absorbing organic carbon (brown carbon). Ambient atmospheric samples were collected at an urban site in Beijing during winter and summer, along with source samples from residential crop straw burning. Carbonaceous aerosol species, including organic carbon (OC), elemental carbon (EC), WSOC and multiple saccharides as well as water-soluble potassium (K+) in PM2.5 (fine particulate matter with size less than 2.5μm) were measured. Chemical signatures of atmospheric aerosols in Beijing during winter and summer days with significant biomass burning influence were identified. Meanwhile, light absorption by WSOC was measured and quantitatively compared to EC at ground level. The results from this study indicated that levoglucosan exhibited consistently high concentrations (209±145ngm-3) in winter. Ratios of levoglucosan/mannosan (L/M) and levoglucosan/galacosan (L/G) indicated that residential biofuel use is an important source of biomass burning aerosol in winter in Beijing. Light absorption coefficient per unit ambient WSOC mass calculated at 365nm is approximately 1.54±0.16m2g-1 in winter and 0.73±0.15m2g-1 in summer. Biomass burning derived WSOC accounted for 23±7% and 16±7% of total WSOC mass, and contributed to 17±4% and 19±5% of total WSOC light absorption in winter and summer, respectively. It is noteworthy that, up to 30% of total WSOC light absorption was attributed to biomass burning in significant biomass-burning-impacted summer day. Near-surface light absorption (over the range 300-400nm) by WSOC was about ~40% of that by EC in winter and ~25% in summer. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82365
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China; Department of Atmospheric Science, Colorado State University, Fort Collins, CO, 80523, USA; Department of Environmental Science and Analytical Chemistry (ACES) and the Bolin Centre for Climate Research, Stockholm University, 10691, Stockholm, Sweden
Recommended Citation:
Yan C,, Zheng M,, Sullivan A,et al. Chemical characteristics and light-absorbing property of water-soluble organic carbon in Beijing: Biomass burning contributions[J]. Atmospheric Environment,2017-01-01,121