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Catalytic Adsorptive Stripping Voltammetry of Cobalt in the Presence of Dimethylglyoxime and Nitrite at In Situ Plated Lead–Copper Film Electrode
Author(s) -
Grabarczyk Malgorzata,
Tyszczuk Katarzyna,
Korolczuk Mieczyslaw
Publication year - 2006
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.200503376
Subject(s) - adsorptive stripping voltammetry , dimethylglyoxime , copper , cobalt , chemistry , stripping (fiber) , electrode , catalysis , detection limit , inorganic chemistry , voltammetry , analytical chemistry (journal) , materials science , electrochemistry , chromatography , biochemistry , organic chemistry , composite material
A lead‐copper film electrode was proposed for Co(II) determination by catalytic adsorptive stripping voltammetry. The electrode was plated in situ and hence the exchange of a solution after plating step was not required. At optimized conditions the calibration graph for Co(II) was linear from 5×10 −10 to 2×10 −8 mol L −1 for accumulation time of 15 s. The relative standard deviation for Co(II) determination at concentration 5×10 −9 mol L −1 was 4.1%. The detection limits for Co(II) were 1.2×10 −10 and 1.0×10 −11 mol L −1 for an accumulation time of 15 and 180 s, respectively. The method was applied to Co(II) determination in certified reference material and other water samples.