Carbon paste electrodes modified with clays and humic acids

Abstract

Possibilities of modified carbon paste electrodes (CPEs) in "diagnosis" of the ion-exchange and complexation properties of complicated modifiers of natural origin are shown. The carbon paste electrodes were modified with clay minerals, humic acids and with clay-humates associates. Results of "diagnostic" measurements were used in the elaboration of the determination of Cu(II) by means of the CPE modified with montmorillonite and of Hg(II) by means of the CPE modified with humic acid.