Biogeosciences
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Articles | Volume 23, issue 5
Articles | Volume 23, issue 5
https://doi.org/10.5194/bg-23-1881-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-1881-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 5
Technical note
 | 
11 Mar 2026
Technical note |  | 11 Mar 2026

Technical note: Further adjustments to the Rock-Eval® thermal analysis for soil organic and inorganic carbon quantification to avoid post-hoc corrections

Joséphine Hazera, David Sebag, Isabelle Kowalewski, Herman Ravelojaona, Eric Verrecchia, Gergely Jakab, Dóra Zacháry, Florian Schneider, Luca Trombino, Raphaël J. Manlay, Julien Fouché, and Tiphaine Chevallier

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Short summary
Adjusting Rock-Eval® cycle is needed to avoid the need for post-hoc corrections to estimate soil organic (SOC) and inorganic (SIC) carbon. PYRO520 is a cycle with a pyrolysis ending at 520°C instead of 650°C to avoid SIC decomposition while preserving the SOC characterization during pyrolysis. This cycle corrects the misallocation of the end-of-pyrolysis signals and thus repeatably and accurately estimates SOC and SIC contents without using corrections, while preserving the SOC characterization.
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