Controle de la solubilite du fer et de l'aluminium en milieu ferrallitique |
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| Authors: | G. Sarazin Ph. Ildefonse J.P. Muller |
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| Affiliation: | 1. Laboratoire de Géochimie des Eaux, Université de Paris VII, 75251 Paris Cedex 05, France;7. Laboratoire de Pédologie, Université de Paris VII, 75251 Paris Cedex 05, France |
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| Abstract: | The Fe and Al content of ground and surface waters of a toposequence sampled in Central Cameroun are interpreted as being controlled by equilibrium interactions of water and secondary mineral phases in the macroscopic system. Calculations based on the known thermodynamic properties of ferric hydroxide and kaolinite are consistent with this hypothesis, though microsystems making up the macrosystem contain ephemeral phases that are not in equilibrium with phreatic waters. |
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