Showing papers by "C. Annette Johnson published in 1991"

TL;DR: In this paper, the authors investigated the oxidation kinetics of Cr(III) to Cr(VI) on the surface of manganite (γ-MnOOH) and showed that the reaction is first order with respect to the manganites adsorption density and also to Cr (III) concentration up to a critical adsoreption density (02 μmol m−2) above this concentration the reaction appears to be inhibited.

TL;DR: In this paper, the authors examined the redox conditions occurring in lake Greifen during summer stagnation and found that the appearance of reduced species over the course of the stagnation period corresponds qualitatively to the thermodynamic redox sequence.