Title :
A test study of atmospheric 14CO2 variations in southeastern Xi´an City
Author :
Huo, Wenwen ; Zhou, Weijian ; Cheng, Peng ; Lu, Xuefeng
Author_Institution :
State Key Lab. of Loess & Quaternary Geol., Inst. of Earth Environ., Xi´an, China
Abstract :
Δ14CO2 observations via Accelerator mass spectrometer are increasingly used to trace recently added fossil fuel CO2 in the atmosphere for evaluating and constraining the CO2 emission. In this study, we collected one-day CO2 samples in southeastern Xi´an City and analyzed them in the Xi´an-AMS Center to test our method. A TiH2 graphitization method introduced by Dr. Xu was modified by us to graphitize the CO2 samples for AMS measurement. Our preliminary results show that fossil fuel varied from 1.16%-8.36% of the CO2 concentration in air at the southeastern Xi´an City. We concluded the large variations of the fossil fuel CO2 concentration may be caused by motor vehicle exhaust emission and people daily coal burning.
Keywords :
atmospheric composition; atmospheric techniques; fossil fuels; graphitisation; CO2 emission; CO2 samples; China; TiH2 graphitization method; Xi´an-AMS Center; accelerator mass spectrometer; atmospheric 14CO2 variations; fossil fuel CO2 concentration; motor vehicle exhaust emission; people daily coal burning; southeastern Xi´an City; Atmospheric measurements; Atmospheric modeling; Cities and towns; Electron tubes; Fossil fuels; Valves; Δ14C; AMS; burning; coal; exhaust emission; fossil fuel;
Conference_Titel :
Water Resource and Environmental Protection (ISWREP), 2011 International Symposium on
Conference_Location :
Xi´an
Print_ISBN :
978-1-61284-339-1
DOI :
10.1109/ISWREP.2011.5893718
