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.
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.
the Creative Commons Attribution 4.0 License.
Technical note
| 
11 Mar 2026
Technical note |
| 11 Mar 2026
| 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
CORRESPONDING AUTHOR
Institut des Sciences de la Terre de Paris ISTeP – UMR 7193, Sorbonne Université, CNRS, CY Univ, Paris, 75005, France
Direction Sciences de la Terre et Technologies de l'Environnement, IFP Énergies Nouvelles, Rueil-Malmaison, 92852, France
Eco&Sols, University of Montpellier, CIRAD, Institut Agro Montpellier, INRAE, IRD, Montpellier, 34060, France
David Sebag
Direction Sciences de la Terre et Technologies de l'Environnement, IFP Énergies Nouvelles, Rueil-Malmaison, 92852, France
Isabelle Kowalewski
Direction Sciences de la Terre et Technologies de l'Environnement, IFP Énergies Nouvelles, Rueil-Malmaison, 92852, France
Herman Ravelojaona
Direction Sciences de la Terre et Technologies de l'Environnement, IFP Énergies Nouvelles, Rueil-Malmaison, 92852, France
Eric Verrecchia
Institute of Earth Surface Dynamics, University of Lausanne, Lausanne, 1015, Switzerland
Gergely Jakab
HUN-REN Research Centre for Astronomy and Earth Sciences, Geographical Institute, Budapest, 1121, Hungary
Dóra Zacháry
HUN-REN Research Centre for Astronomy and Earth Sciences, Geographical Institute, Budapest, 1121, Hungary
Florian Schneider
Institute of Climate-Smart Agriculture, Thünen, 38116 Braunschweig, Germany
Luca Trombino
Earth Science Department, University of Milan, Milan, 20133, Italy
Raphaël J. Manlay
Eco&Sols, University of Montpellier, CIRAD, Institut Agro Montpellier, INRAE, IRD, Montpellier, 34060, France
AgroParisTech, Palaiseau, 91120, France
Julien Fouché
Lisah, University of Montpellier, Institut Agro Montpellier, INRAE, IRD, Montpellier, 34060, France
Tiphaine Chevallier
Eco&Sols, University of Montpellier, CIRAD, Institut Agro Montpellier, INRAE, IRD, Montpellier, 34060, France
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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.
Adjusting Rock-Eval® cycle is needed to avoid the need for post-hoc corrections to estimate soil...
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