Articles | Volume 23, issue 13
https://doi.org/10.5194/acp-23-7495-2023
https://doi.org/10.5194/acp-23-7495-2023
Technical note
 | 
11 Jul 2023
Technical note |  | 11 Jul 2023

Technical note: Intercomparison study of the elemental carbon radiocarbon analysis methods using synthetic known samples

Xiangyun Zhang, Jun Li, Sanyuan Zhu, Junwen Liu, Ping Ding, Shutao Gao, Chongguo Tian, Yingjun Chen, Ping'an Peng, and Gan Zhang

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Cited articles

Anenberg, S. C., Balakrishnan, K., Jetter, J., Masera, O., Mehta, S., Moss, J., and Ramanathan, V.: Cleaner Cooking Solutions to Achieve Health, Climate, and Economic Cobenefits, Environ. Sci. Technol., 47, 3944–3952, https://doi.org/10.1021/es304942e, 2013. 
Bond, T. C., Streets, D. G., Yarber, K. F., Nelson, S. M., Woo, J. H., and Klimont, Z.: A technology-based global inventory of black and organic carbon emissions from combustion, J. Geophys. Res.-Atmos., 109, 43, https://doi.org/10.1029/2003jd003697, 2004. 
Chen, B., Andersson, A., Lee, M., Kirillova, E. N., Xiao, Q. F., Krusa, M., Shi, M. N., Hu, K., Lu, Z. F., Streets, D. G., Du, K., and Gustafsson, O.: Source Forensics of Black Carbon Aerosols from China, Environ. Sci. Technol., 47, 9102–9108, https://doi.org/10.1021/es401599r, 2013. 
Chen, J., Jia, W. L., Yu, C. L., Zhang, X. Y., and Peng, P. A.: Bound hydrocarbons and structure of pyrobitumen rapidly formed by asphaltene cracking: Implications for oil-source correlation, Org. Geochem., 146, 16, https://doi.org/10.1016/j.orggeochem.2020.104053, 2020. 
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The results show that 14C elemental carbon (EC) was not only related to the isolation method but also to the types and proportions of the biomass sources in the sample. The hydropyrolysis (Hypy) method, which can be used to isolate a highly stable portion of ECHypy and avoid charring, is a more effective and stable approach for the matrix-independent 14C quantification of EC in aerosols, and the 13C–ECHypy and non-fossil ECHypy values of SRM1649b were –24.9 ‰ and 11 %, respectively.
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