Biogeosciences
Biogeosciences
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Articles | Volume 16, issue 16
Articles | Volume 16, issue 16
https://doi.org/10.5194/bg-16-3197-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-16-3197-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 16, issue 16
Technical note
 | 
28 Aug 2019
Technical note |  | 28 Aug 2019

Technical Note: Isotopic corrections for the radiocarbon composition of CO2 in the soil gas environment must account for diffusion and diffusive mixing

Jocelyn E. Egan, David R. Bowling, and David A. Risk

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Short summary
Traditionally a mass-dependent correction is made when measuring the radiocarbon composition in organic samples. This correction has not been evaluated for the soil gas environment where gas transport processes are important. Here, we show using theory that this traditional correction is not appropriate for estimating the radiocarbon composition of soil biological production. We also propose a new solution that accounts for soil gas transport processes.
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