The Convenient Determination of Palladium at a Solid Electrode via Adsorptive Stripping Voltammetry at a Glassy Carbon Electrode Modified with a Random Array of Mercury Nanodroplets

P Abiman, GG Wildgoose, L Xiao, RG Compton

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11 Citations (Scopus)

Abstract

The detection of palladium using adsorptive stripping voltammetry reported by Wang et al. (J. Wang, K. Varughese Anal. Chim. Acta 1987, 199, 185 [3]) at a hanging mercury drop electrode is extended to a more convenient solid electrode. To this end a random array of 3.5×108 mercury nanodroplets per cm2 (65 nm average diameter) was electrodeposited on a glassy carbon substrate. Adsorptive stripping voltammetry was performed using 2×10-4 M dimethylglyoxime as a chelating agent for the Pd(II) ion, with accumulation at -0.20 V vs. SCE for 120 s and a linear detection range of 5–150 µM was determined with a limit of detection of 1.6 µM.
Original languageEnglish
Pages (from-to)1607-1609
Number of pages3
JournalElectroanalysis
Volume20
Issue number14
DOIs
Publication statusPublished - Jul 2008

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