Reactions, redox potential and kinetics

Redox reactions are fundamental to life, and local heterogeneities in the soil create gradients in pH, redox and chemical concentrations that support chemical reactions. In situ monitoring of waters can distinguish abiotic and biotic reactions, and the analysis of temporal data makes it possible to establish the kinetics of these reactions. Field data show that the oxidation–reduction potential can vary over a wide range of pe in a few hours, and that fougerite can be a competitor of denitrification. Layered double hydroxides can drive self-organizing reactions, including redox reactions, usable for storage and replication of chemical information.