Source apportionment of carbonaceous aerosols in Xi'an, China: insights from a full year of measurements of radiocarbon and the stable isotope 13C
Haiyan Ni,Ru-Jin Huang,Junji Cao,Weiguo Liu,Ting Zhang,Meng Wang,Harro A. J. Meijer,and Ulrike Dusek
Haiyan Ni
Centre for Isotope Research (CIO), Energy and Sustainability Research
Institute Groningen (ESRIG), University of Groningen, Groningen, 9747 AG,
the Netherlands
State Key Laboratory of Loess and Quaternary Geology (SKLLQG),
Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061,
China
Key Laboratory of Aerosol Chemistry & Physics (KLACP), Institute of
Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China
University of Chinese Academy of Sciences, Beijing, 100049, China
Key Laboratory of Aerosol Chemistry & Physics (KLACP), Institute of
Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China
Institute of Global Environmental Change, Xi'an Jiaotong University,
Xi'an, 710049, China
Weiguo Liu
State Key Laboratory of Loess and Quaternary Geology (SKLLQG),
Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061,
China
Ting Zhang
Key Laboratory of Aerosol Chemistry & Physics (KLACP), Institute of
Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China
Meng Wang
Key Laboratory of Aerosol Chemistry & Physics (KLACP), Institute of
Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China
Harro A. J. Meijer
Centre for Isotope Research (CIO), Energy and Sustainability Research
Institute Groningen (ESRIG), University of Groningen, Groningen, 9747 AG,
the Netherlands
Ulrike Dusek
Centre for Isotope Research (CIO), Energy and Sustainability Research
Institute Groningen (ESRIG), University of Groningen, Groningen, 9747 AG,
the Netherlands
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Seasonal changes in organic carbon (OC) and elemental carbon (EC) sources in Xi'an, China, are investigated based on measurements of radiocarbon and the stable isotope 13C. Relative contributions to EC from biomass burning, coal combustion, and vehicle emissions change substantially between different seasons. Biomass burning contributes 60 % to the EC increment in winter. Comparing concentrations and sources of primary OC to total OC suggests non-negligible OC loss due to active photochemistry.
Seasonal changes in organic carbon (OC) and elemental carbon (EC) sources in Xi'an, China, are...
