Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 5.509 IF 5.509
  • IF 5-year value: 5.689 IF 5-year 5.689
  • CiteScore value: 5.44 CiteScore 5.44
  • SNIP value: 1.519 SNIP 1.519
  • SJR value: 3.032 SJR 3.032
  • IPP value: 5.37 IPP 5.37
  • h5-index value: 86 h5-index 86
  • Scimago H index value: 161 Scimago H index 161
Volume 17, issue 18 | Copyright
Atmos. Chem. Phys., 17, 11491-11502, 2017
https://doi.org/10.5194/acp-17-11491-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 27 Sep 2017

Research article | 27 Sep 2017

Sources of non-fossil-fuel emissions in carbonaceous aerosols during early winter in Chinese cities

Di Liu1, Jun Li1, Zhineng Cheng1, Guangcai Zhong1, Sanyuan Zhu1, Ping Ding2, Chengde Shen2, Chongguo Tian3, Yingjun Chen4, Guorui Zhi5, and Gan Zhang1 Di Liu et al.
  • 1State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
  • 2State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
  • 3Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
  • 4State Key Laboratory of Pollution Control and Resources Reuse, Key Laboratory of Cities' Mitigation and Adaptation to Climate Change, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
  • 5State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China

Abstract. China experiences frequent and severe haze outbreaks from the beginning of winter. Carbonaceous aerosols are regarded as an essential factor in controlling the formation and evolution of haze episodes. To elucidate the carbon sources of air pollution, source apportionment was conducted using radiocarbon (14C) and unique molecular organic tracers. Daily 24h PM2. 5 samples were collected continuously from October 2013 to November 2013 in 10 Chinese cities. The 14C results indicated that non-fossil-fuel (NF) emissions were predominant in total carbon (TC; average =  65 ± 7%). Approximately half of the EC was derived primarily from biomass burning (BB) (average =  46 ± 11%), while over half of the organic carbon (OC) fraction comprised NF (average =  68 ± 7%). On average, the largest contributor to TC was NF-derived secondary OC (SOCnf), which accounted for 46 ± 7% of TC, followed by SOC derived from fossil fuels (FF) (SOCf; 16 ± 3%), BB-derived primary OC (POCbb; 13 ± 5%), POC derived from FF (POCf; 12 ± 3%), EC derived from FF (ECf; 7 ± 2%) and EC derived from BB (ECbb; 6 ± 2%). The regional background carbonaceous aerosol composition was characterized by NF sources; POCs played a major role in northern China, while SOCs contributed more in other regions. However, during haze episodes, there were no dramatic changes in the carbon source or composition in the cities under study, but the contribution of POC from both FF and NF increased significantly.

Download & links
Publications Copernicus
Download
Short summary
To elucidate the carbon sources of air pollution, source apportionment was conducted using radiocarbon and unique molecular organic tracers during the beginning of winter 2013 in 10 Chinese cities. The results indicated that non-fossil-fuel (NF) emissions were predominant. During haze episodes, there were no dramatic changes in the carbon source or composition in the cities under study, but the contribution of primary OC from both fossil fuel and NF increased significantly.
To elucidate the carbon sources of air pollution, source apportionment was conducted using...
Citation
Share