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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
Author(s) -
Abiman Poobalasingam,
Wildgoose Gregory G.,
Xiao Lei,
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.200804244
Subject(s) - adsorptive stripping voltammetry , palladium , detection limit , anodic stripping voltammetry , dimethylglyoxime , hanging mercury drop electrode , electrode , voltammetry , glassy carbon , stripping (fiber) , chemistry , analytical chemistry (journal) , mercury (programming language) , dropping mercury electrode , saturated calomel electrode , inorganic chemistry , electrochemistry , working electrode , materials science , cyclic voltammetry , chromatography , catalysis , organic chemistry , cobalt , composite material , computer science , programming language
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 3.5×10 8 mercury nanodroplets per cm 2 (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.
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