Stripping voltammetry with bismuth modified graphite-epoxy composite electrodes
The attractive performance of graphite-epoxy composite electrodes (GECE) surface-modified with a bismuth film (Bi-GECE) for simultaneous and separate stripping determination of trace amounts of heavy metals (lead, cadmium and zinc) is described. Several key parameters have been optimized. Bi-GECEi electrode shows superior accumulation properties when compared to bare GECE or even to Hg-GECE. Bi-GECE exhibits …
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