Hydroxyphenol interactions with iron and aluminium oxide colloids by chemical force specrometry

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.