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Determination of chloride by stripping chronopotentiometry with silver‐film electrode
Author(s) -
Suturović Zvonimir J.,
Marjanović Nikola J.,
Dokić Petar P.
Publication year - 1997
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.1140090714
Subject(s) - stripping (fiber) , chloride , cathodic protection , electrode , silver chloride , detection limit , cathodic stripping voltammetry , analytical chemistry (journal) , reproducibility , chemistry , relative standard deviation , anodic stripping voltammetry , materials science , inorganic chemistry , electrochemistry , metallurgy , chromatography , composite material
The experimental parameters of cathodic stripping chronopotentiometry of chloride at a silver‐film electrode are investigated and optimized. The chloride preconcentration is achieved in the form of silver chloride by a controlled potential oxidation of the working electrode under vigorous stirring. Cathodic stripping of the deposit is obtained by the constant current, under the condition of diffusive mass transfer. Deaeration of the solution is not necessary. A detection limit of 35 μ dm −3 (10 −6 mol dm −3 ) is obtained at a deposition time of 180 s, with a reproducibility of 6.7 % (expressed as relative standard deviation, RSD).