DOI: 10.1016/j.atmosenv.2015.10.052
Scopus记录号: 2-s2.0-84948165047
论文题名: Diurnal variations of carbonaceous components, major ions, and stable carbon and nitrogen isotope ratios in suburban aerosols from northern vicinity of Beijing
作者: He N ; , Kawamura K ; , Kanaya Y ; , Wang Z
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 123 起始页码: 18
结束页码: 24
语种: 英语
英文关键词: Aerosols
; Elemental carbon
; Inorganic ions
; Isotope ratios
; Organic carbon
Scopus关键词: Aerosols
; Air quality
; Atmospheric aerosols
; Atmospheric movements
; Fuels
; Ions
; Isotopes
; Meteorology
; Nitrogen
; Aerosol chemical composition
; Carbonaceous components
; Elemental carbon
; Inorganic ions
; Isotope ratio
; Photochemical processing
; Stable carbon and nitrogen isotopes
; Water-soluble organic carbon
; Organic carbon
; carbon
; fossil fuel
; ion
; isotope
; nitrogen
; organic carbon
; aerosol
; air mass
; atmospheric transport
; C3 plant
; carbon isotope
; chemical composition
; diurnal variation
; fossil fuel
; ion
; isotopic ratio
; nitrogen isotope
; stable isotope
; suburban area
; aerosol
; air
; air quality
; analytic method
; Article
; atmospheric transport
; chemical composition
; China
; combustion
; forest
; meteorology
; photooxidation
; phytoplankton
; priority journal
; wind
; Beijing [China]
; China
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: We report diurnal variations of organic carbon (OC), elemental carbon (EC), water-soluble organic carbon (WSOC) and major ions as well as stable carbon and nitrogen isotope ratios (δ13C and δ15N) in ambient aerosols at a suburban site (Mangshan), 40 km north of Beijing, China. We found that aerosol chemical compositions were largely controlled by the air mass transport from Beijing in daytime with southerly winds and by relatively fresh air mass in nighttime from the northern forest areas with northerly winds. Higher concentrations of aerosol mass and total carbon were obtained in daytime. Further, higher OC/EC ratios were recorded in daytime (4.0 ± 1.7) than nighttime (3.2 ± 0.7), suggesting that OC is formed by photochemical oxidation of gaseous precursors in daytime. Contributions of WSOC to OC were slightly higher in daytime (38%) than nighttime (34%), possibly due to secondary formation of WSOC in daytime. We also found higher concentrations of Ca2+ in daytime, which was originated from the construction dust in Beijing area and transported to the sampling site. δ13C ranged from -25.3 to -21.2‰ (ave. -23.5 ± 0.9‰) in daytime and -29.0 to -21.4‰ (-24.0 ± 1.5‰) in nighttime, suggesting that Mangshan aerosols were more influenced by fossil fuel combustion products in daytime and by terrestrial C3 plants in nighttime. This study suggests that daytime air mass delivery from megacity Beijing largely influence the air quality at the receptor site in the north together with photochemical processing of organic aerosols during the atmospheric transport, whereas the Mangshan site is covered with relatively clean air masses at night. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81420
Appears in Collections: 气候变化事实与影响
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作者单位: Institute of Low Temperature Science, Hokkaido University, N19 W8, Kita-ku, Sapporo, Japan; Graduate School of Environmental Science, Hokkaido University, N10 W5, Kita-ku, Sapporo, Japan; Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology, Japan; LAPC, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
He N,, Kawamura K,, Kanaya Y,et al. Diurnal variations of carbonaceous components, major ions, and stable carbon and nitrogen isotope ratios in suburban aerosols from northern vicinity of Beijing[J]. Atmospheric Environment,2015-01-01,123