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Tracing fossil fuel CO2 using D14C in Xi'an City, China
Zhou,WJ(Zhou,Weijian)[1,2,3]; Wu,SG(Wu,Shugang)[1,4]; Huo,WW(Huo,Wenwen)[1,5]; Xiong,XH(Xiong,Xiaohu)[1,2,4]; Cheng,P(Cheng,Peng)[1,2]; Lu,XF(Lu,Xuefeng)[1,2]; Niu,ZC(Niu,Zhenchuan)[1,2]
Source PublicationAtmospheric Environment

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 D14C 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 ± 1.7 ppm, 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 ± 17.1 ppm) than that in summer (20.2 ± 9.8 ppm) 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 D14C of both green foxtail and air samples is a good indicator of CO2ff emission.

KeywordD14c Annual Plant Air Samples Fossil Fuel Co2 Spatial Distribution Temporal Variation
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Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorZhou,WJ(Zhou,Weijian)[1,2,3]
Affiliation1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China;
2.National Center for Accelerator Mass Spectrometry in Xi'an, China;
3.Xi'an Jiaotong University, Xi'an, China;
4.University of Chinese Academy of Sciences, Beijing, China;
5.Tianjin Polytechnic University, Tianjin, China
Recommended Citation
GB/T 7714
Zhou,WJ,Wu,SG,Huo,WW,et al. Tracing fossil fuel CO2 using D14C in Xi'an City, China[J]. Atmospheric Environment,2014,94:538-545.
APA Zhou,WJ.,Wu,SG.,Huo,WW.,Xiong,XH.,Cheng,P.,...&Niu,ZC.(2014).Tracing fossil fuel CO2 using D14C in Xi'an City, China.Atmospheric Environment,94,538-545.
MLA Zhou,WJ,et al."Tracing fossil fuel CO2 using D14C in Xi'an City, China".Atmospheric Environment 94(2014):538-545.
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