Abstract:
Tannins and humic substances commonly referred to as natural organic matter
(NOM), constitute an important component of natural water and soil systems. These
species contain numerous phenol and carboxyl functional groups whose reactivity is
strongly dependent on both the quantity and location of these moieties on the aromatic
ring. In the realistic environmental conditions, both phenolic and carboxylic functional
groups are adsorbed on a variety of colloidal metal oxide surfaces. Unfortunately, due to
the complexity of humic-based substances, experimental data involving mineral-humate
interactions are difficult to interpret.