Rapidly renewable and reproducible electropolymerized surface at a monomermodified carbon paste electrode

A novel method of generating a rapidly renewable and reproducible polymer c oated electrode surface is proposed. This involves in situ electropolymeriz ation at a monomer modified carbon paste electrode. A carbon paste electrod e bulk modified with 2-methyl-8-hydroxyquinoline was used to demonstrate th is approach. The polymer modified carbon paste electrode obtained by electr opolymerization was found to be useful for trace determination of Cu(II), i nvolving preconcentration and anodic stripping procedures. It was also show n that the polymer coated electrode surface could be renewed quickly and re producibly after each determination. An optimized procedure was developed s ubsequently for the determination of Cu(IT) and this was employed for the d etermination of Cu(II) in a certified water quality control sample. Althoug h the proposed method was demonstrated for Cu(II) determination, in princip le, it can be more generally useful in applications involving polymer modif ied electrodes. (C) 1999 Elsevier Science S.A. All rights reserved.