Articles | Volume 18, issue 22
Atmos. Chem. Phys., 18, 16363–16383, 2018
https://doi.org/10.5194/acp-18-16363-2018
Atmos. Chem. Phys., 18, 16363–16383, 2018
https://doi.org/10.5194/acp-18-16363-2018
Research article
19 Nov 2018
Research article | 19 Nov 2018

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 et al.

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Short summary
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.
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