DOI: 10.1016/j.atmosenv.2014.05.058
Scopus记录号: 2-s2.0-84902000520
论文题名: Tracing fossil fuel CO2 using δ14C in Xi'an City, China
作者: Zhou W ; , Wu S ; , Huo W ; , Xiong X ; , Cheng P ; , Lu X ; , Niu Z
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 94 起始页码: 538
结束页码: 545
语种: 英语
英文关键词: Air samples
; Annual plant
; Spatial distribution
; Temporal variation
Scopus关键词: Fossil fuels
; Spatial distribution
; Air samples
; Annual plants
; Dispersion condition
; Fossil fuel emissions
; High resolution
; Industrial area
; Temporal variation
; Trace fossils
; Carbon dioxide
; aluminum
; carbon 14
; carbon dioxide
; fossil fuel
; iron
; zinc
; air sampling
; annual plant
; atmospheric chemistry
; carbon dioxide
; carbon emission
; carbon isotope
; combustion
; dispersion
; fossil fuel
; human activity
; spatial distribution
; temporal variation
; urban development
; air pollution
; air sampling
; annual plant
; article
; atmospheric dispersion
; China
; controlled study
; human
; industrial area
; isotope tracing
; mass spectrometry
; nonhuman
; priority journal
; summer
; China
; Shaanxi
; Xian
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: Radiocarbon can be used to trace fossil fuel CO2 (CO2ff) in the atmosphere, because radiocarbon has been depleted in fossil fuels. Here we present our study on the spatial distribution and temporal variations of CO2ff in Xi'an City, China using δ14C of both green foxtail (Setaria viridis, L. Beauv.) leaf samples and urban air samples collected in the recent years. Our results show that the CO2ff indicated by green foxtail ranged from 14.7±1.7 to 52.6±1.7ppm, reflecting high CO2ff mole fractions in downtown, industrial areas, and at road sites, and low CO2ff mole fractions in public parks. Meanwhile, the monthly CO2ff reflected by air samples showed higher value in winter (57.8±17.1ppm) than that in summer (20.2±9.8ppm) due to the enhancement usage of coal burning and the poor dispersion condition of atmosphere. This study displays that the increased fossil fuel emission is associated with the fast development of Xi'an City in China. It is worth mentioning that the green foxtail samples can be used to map out the CO2ff spatial distribution on large scale quickly and conveniently, while the air samples can be used to trace the CO2ff temporal variations with high resolution effectively. Therefore the δ14C of both green foxtail and air samples is a good indicator of CO2ff emission. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81246
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China; National Center for Accelerator Mass Spectrometry, Xi'an, China; Xi'an Jiaotong University, Xi'an, China; University of Chinese Academy of Sciences, Beijing, China; Tianjin Polytechnic University, Tianjin, China
Recommended Citation:
Zhou W,, Wu S,, Huo W,et al. Tracing fossil fuel CO2 using δ14C in Xi'an City, China[J]. Atmospheric Environment,2014-01-01,94