The Fabrication and Characterization of a Bismuth Nanoparticle Modified Boron Doped Diamond Electrode and Its Application to the Simultaneous Determination of Cadmium(II) And Lead(II)

Kathryn E. Toghill, Gregory Wildgoose, Amir Moshar, Chris Mulcahy, Richard G. Compton

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125 Citations (Scopus)

Abstract

We report the simultaneous electroanalytical determination of Pb2+ and Cd2+ by square-wave anodic stripping voltammetry (SWASV) using a bismuth nanoparticle modified boron doped diamond (Bi-BDD) electrode. Bi deposition was performed in situ with the analytes, from a solution of 0.1 mM Bi(NO3)3 in 0.1 M HClO4 (pH 1.2), and gave detection limits of 1.9 µg L-1 and 2.3 µg L-1 for Pb(II) and Cd(II) respectively. Pb2+ and Cd2+ could not be detected simultaneously at a bare BDD electrode, whilst on a bulk Bi macro electrode (BiBE) the limits of detection for the simultaneous determination of Pb2+ and Cd2+ were ca. ten times higher.
Original languageEnglish
Pages (from-to)1731-1737
Number of pages7
JournalElectroanalysis
Volume20
Issue number16
DOIs
Publication statusPublished - Aug 2008

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