Preprints
https://doi.org/10.5194/egusphere-2024-578
https://doi.org/10.5194/egusphere-2024-578
04 Mar 2024
 | 04 Mar 2024

Technical Note: A validated correction method to quantify organic and inorganic carbon in soils using Rock-Eval® thermal analysis

Marija Stojanova, Pierre Arbelet, François Baudin, Nicolas Bouton, Giovanni Caria, Lorenza Pacini, Nicolas Proix, Edouard Quibel, Achille Thin, and Pierre Barré

Abstract. Soils contain large amounts of carbon stored as organic carbon and carbonates. These carbon pools can contribute to climate regulation, and are of primary importance in ensuring proper soil functioning. However, their accurate quantification remains a complex task. Rock-Eval® thermal analysis has emerged as an alternative to classic dry combustion and wet methods, due to its ability to simultaneously provide organic and inorganic carbon measurements on the same subsample. However, it has been observed that Rock-Eval® systematically underestimates the soil organic carbon (SOC), while overestimating the soil inorganic carbon (SIC). In this technical note, we propose a validated correction of both SOC and SIC based on a machine-learning model and using a diverse dataset of 240 soil samples. We show that the proposed correction significantly increases the accuracy of the Rock-Eval® method on the initial dataset, and that it can be successfully applied to data originating from different Rock-Eval® machines, without changing the routine analytical protocol. The transferability of the model allows for its future implementation in the Geoworks software so that Rock-Eval® machines can routinely provide accurate SIC and SOC measurements.

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Journal article(s) based on this preprint

27 Sep 2024
Technical note: A validated correction method to quantify organic and inorganic carbon in soils using Rock-Eval® thermal analysis
Marija Stojanova, Pierre Arbelet, François Baudin, Nicolas Bouton, Giovanni Caria, Lorenza Pacini, Nicolas Proix, Edouard Quibel, Achille Thin, and Pierre Barré
Biogeosciences, 21, 4229–4237, https://doi.org/10.5194/bg-21-4229-2024,https://doi.org/10.5194/bg-21-4229-2024, 2024
Short summary
Marija Stojanova, Pierre Arbelet, François Baudin, Nicolas Bouton, Giovanni Caria, Lorenza Pacini, Nicolas Proix, Edouard Quibel, Achille Thin, and Pierre Barré

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment on egusphere-2024-578', Isabel Sonsoles De Soto Garcia, 26 Mar 2024
    • AC3: 'Reply on CC1', Marija Stojanova, 30 Apr 2024
  • RC1: 'Comment on egusphere-2024-578', Anonymous Referee #1, 02 Apr 2024
    • AC1: 'Reply on RC1', Marija Stojanova, 30 Apr 2024
  • RC2: 'Comment on egusphere-2024-578', Anonymous Referee #2, 03 Apr 2024
    • AC2: 'Reply on RC2', Marija Stojanova, 30 Apr 2024

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment on egusphere-2024-578', Isabel Sonsoles De Soto Garcia, 26 Mar 2024
    • AC3: 'Reply on CC1', Marija Stojanova, 30 Apr 2024
  • RC1: 'Comment on egusphere-2024-578', Anonymous Referee #1, 02 Apr 2024
    • AC1: 'Reply on RC1', Marija Stojanova, 30 Apr 2024
  • RC2: 'Comment on egusphere-2024-578', Anonymous Referee #2, 03 Apr 2024
    • AC2: 'Reply on RC2', Marija Stojanova, 30 Apr 2024

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
ED: Reconsider after major revisions (02 May 2024) by Sara Vicca
AR by Marija Stojanova on behalf of the Authors (18 Jun 2024)  Author's response   Author's tracked changes   Manuscript 
ED: Referee Nomination & Report Request started (20 Jun 2024) by Sara Vicca
RR by Anonymous Referee #2 (11 Jul 2024)
ED: Publish subject to minor revisions (review by editor) (16 Jul 2024) by Sara Vicca
AR by Marija Stojanova on behalf of the Authors (19 Jul 2024)  Author's response   Author's tracked changes   Manuscript 
ED: Publish as is (23 Jul 2024) by Sara Vicca
AR by Marija Stojanova on behalf of the Authors (20 Aug 2024)  Manuscript 

Journal article(s) based on this preprint

27 Sep 2024
Technical note: A validated correction method to quantify organic and inorganic carbon in soils using Rock-Eval® thermal analysis
Marija Stojanova, Pierre Arbelet, François Baudin, Nicolas Bouton, Giovanni Caria, Lorenza Pacini, Nicolas Proix, Edouard Quibel, Achille Thin, and Pierre Barré
Biogeosciences, 21, 4229–4237, https://doi.org/10.5194/bg-21-4229-2024,https://doi.org/10.5194/bg-21-4229-2024, 2024
Short summary
Marija Stojanova, Pierre Arbelet, François Baudin, Nicolas Bouton, Giovanni Caria, Lorenza Pacini, Nicolas Proix, Edouard Quibel, Achille Thin, and Pierre Barré

Model code and software

Technical note: A validated correction method to quantify organic and inorganic carbon in soils using Rock-Eval® thermal analysis Marija Stojanova https://zenodo.org/doi/10.5281/zenodo.10706302

Marija Stojanova, Pierre Arbelet, François Baudin, Nicolas Bouton, Giovanni Caria, Lorenza Pacini, Nicolas Proix, Edouard Quibel, Achille Thin, and Pierre Barré

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Short summary
Because of its importance for climate regulation and soil health, many studies are focusing on carbon dynamics in soils. However, quantifying organic and inorganic carbon remains an issue in carbonated soils. In this technical note, we propose a validated correction method to quantify organic and inorganic carbon in soils using Rock-Eval® thermal analysis. With this correction, Rock-Eval® method has the potential to become the standard method for quantifying carbon in carbonate soils.