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Radiocarbon Characterization study of Atmospheric PM2.5 in Beijing during the 2014 APEC Summit

Published online by Cambridge University Press:  15 August 2019

Pang Yijun Open the ORCID record for Pang Yijun [Opens in a new window] ,
Yu Bo ,
He Ming ,
Jiang Shan ,
Zhao Qingzhang ,
Shen Hongtao ,
Wu Shaoyong ,
Yang Xuran ,
Wang Fangfang  and
Meng Qi
...Show all authors
Pang Yijun
Affiliation:
Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
Yu Bo
Affiliation:
Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
He Ming*
Affiliation:
Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
Jiang Shan
Affiliation:
Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
Zhao Qingzhang
Affiliation:
Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
Shen Hongtao
Affiliation:
College of Physics and Technology, Guangxi Normal University, Guilin, 541004, China
Wu Shaoyong
Affiliation:
Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
Yang Xuran
Affiliation:
Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
Wang Fangfang
Affiliation:
Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
Meng Qi
Affiliation:
Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China College of Physics and Technology, Guangxi Normal University, Guilin, 541004, China
Zhang Yuxuan
Affiliation:
Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
*
*Corresponding author. Email: minghe@ciae.ac.cn, heminghhy@163.com.
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Abstract

Radiocarbon (14C) has become a unique and powerful tracer in source apportionment of atmospheric carbonaceous particles. In this study, the Asia Pacific Economic Cooperation summit (APEC) held in Beijing in 2014 was used as a demonstration to research the source apportionment of atmosphere PM2.5. We used a 200 kV single stage accelerator mass spectrometer recently completed at China Institute of Atomic Energy (CIAE). The PM2.5 samples related to above case were collected, and the characteristics of radiocarbon in organic carbon (OC) and elemental carbon (EC) in samples were analyzed using the AMS. The results show that the Before-APEC pollution emission mode is different from the During-APEC and After-APEC pollution emission modes. For Before-APEC, During-APEC and After-APEC, the average values of fossil carbon fraction of OC are 0.463, 0.431 and 0.615, respectively, and those of EC are 0.644, 0.561 and 0.687. The fossil source contributions of traffic activities using fossil fuels to OC and EC are 15.8 % and 21.9 %, respectively. The fossil source contributions of industrial activities to OC and EC are 38.0 % and 8.2 %, respectively. It is about 7–10 days that is needed to take to regenerate the PM2.5 pollution caused by human activities.

Keywords

accelerator mass spectrometerAPECorganic carbon and elemental carbonPM2.5radiocarbon
Type
Conference Paper
Information
Radiocarbon , Volume 61 , Issue 6: Radiocarbon 2018 Conference Proceedings Trondheim, Norway, June 17–22, 2018 Part 2 of 2 , December 2019 , pp. 1643 - 1652
Copyright
© 2019 by the Arizona Board of Regents on behalf of the University of Arizona 

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Footnotes

Selected Papers from the 23rd International Radiocarbon Conference, Trondheim, Norway, 17–22 June, 2018

References

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