A simple method to determine the reactivity of calcium carbonate in soils

Abstract

Determination of soil carbonate is important for numerous chemical and physical soil processes in arid and semi-arid zones. Here, we modify a conventional method to more easily determine active CaCO3 (ACC) fraction in soils. Unlike the conventional method where the oxalate used up after reaction with carbonate is determined by titration with KMnO4, the proposed method uses the difference between total carbonate analyzed before and after reaction with oxalate to determine ACC. The method compared well to the conventional approach; the procedure was faster, did not require KMnO4, and appeared to be unaffected by exchangeable Ca. The proposed method is well-suited for samples across a wide range of total carbonate.

Description

© 2022 The Authors. Soil Science Society of America Journal published by Wiley Periodicals LLC on behalf of Soil Science Society of America. cc-by-nc

Keywords

Citation

Sheikh-Abdullah, S.M., Hirmas, D.R., & Koop, A.N.. 2023. A simple method to determine the reactivity of calcium carbonate in soils. Soil Science Society of America Journal, 87(2). https://doi.org/10.1002/saj2.20512

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