TY - JOUR A1 - Ni, H. A1 - Huang, R.-J. A1 - Cosijn, M. M. A1 - Yang, L. A1 - Guo, J. A1 - Cao, J. A1 - Dusek, U. T1 - Measurement report: dual-carbon isotopic characterization of carbonaceous aerosol reveals different primary and secondary sources in Beijing and Xi'an during severe haze events JO - Atmos. Chem. Phys. J1 - ACP VL - 20 IS - 24 SP - 16041 EP - 16053 Y1 - 2020/12/22 PB - Copernicus Publications SN - 1680-7324 UR - https://acp.copernicus.org/articles/20/16041/2020/ L1 - https://acp.copernicus.org/articles/20/16041/2020/acp-20-16041-2020.pdf DO - 10.5194/acp-20-16041-2020 ER -