Influence of colloid suspensions of humic acids upon the alkaline fading of carbocations

The influence of humic substances (HSs) upon the alkaline hydrolysis of crystal violet (CV) and malachite green (MG) has been studied. Important inhibition of hydrolysis reaction has been reported. This inhibition has been explained in terms of association of reactants to the humic substances. Kinetic results have been modelized using the micellar pseudophase model. Copyright (c) 2008 John Wiley & Sons, Ltd.