Articles | Volume 4, issue 4
SOIL, 4, 237–250, 2018
https://doi.org/10.5194/soil-4-237-2018

Special issue: Quantifying weathering rates for sustainable forestry (BG/SOIL...

SOIL, 4, 237–250, 2018
https://doi.org/10.5194/soil-4-237-2018
Original research article
26 Oct 2018
Original research article | 26 Oct 2018

Aluminium and base cation chemistry in dynamic acidification models – need for a reappraisal?

Jon Petter Gustafsson et al.

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Latest update: 02 Feb 2023
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Short summary
This paper investigates how different dynamic soil chemistry models describe the processes governing aluminium and base cations in acid soil waters. We find that traditional cation-exchange equations, which are still used in many models, diverge from state-of-the-art complexation submodels such as WHAM, SHM, and NICA-Donnan when large fluctuations in pH or ionic strength occur. In conclusion, the complexation models provide a better basis for the modelling of chemical dynamics in acid soils.