Electrochemical behaviour of nicotine adsorbed on montmorillonite

The montmorillonite (Mt) and acid modified montmorillonite (MtA) were used as nicotine adsorbents. The optimal pH values for nicotine adsorption were 6 and 9 for Mt and MtA, respectively. Mt and MtA, previously saturated with nicotine via adsorption, at these characteristic pH values, were used as modifiers of carbon paste electrode. The cyclic voltammetry was performed at characteristic pH values (6 and 9) in Britton-Robinson buffer. The obtained cyclic voltammograms depended on both modifier and pH regime of the supporting electrolyte