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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)
Author(s) -
Toghill Kathryn E.,
Wildgoose Gregory G.,
Moshar Amir,
Mulcahy Chris,
Compton Richard G.
Publication year - 2008
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200804277
Subject(s) - bismuth , electrode , diamond , detection limit , anodic stripping voltammetry , boron , materials science , cadmium , analytical chemistry (journal) , nanoparticle , inorganic chemistry , electrochemistry , nuclear chemistry , chemistry , nanotechnology , metallurgy , chromatography , organic chemistry
We report the simultaneous electroanalytical determination of Pb 2+ and Cd 2+ 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(NO 3 ) 3 in 0.1 M HClO 4 (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. Pb 2+ and Cd 2+ 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 Pb 2+ and Cd 2+ were ca. ten times higher.