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A Novel Voltammetric Method for the Determination of Maleic Acid Using Silver Amalgam Paste Electrode
Author(s) -
Niaz Abdul,
Fischer Jan,
Barek Jiří,
Yosypchuk Bogdan,
Bhanger Muhammad Iqbal
Publication year - 2009
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.200904655
Subject(s) - maleic acid , amalgam (chemistry) , passivation , buffer solution , chemistry , electrode , detection limit , electrolyte , response surface methodology , inorganic chemistry , nuclear chemistry , chromatography , organic chemistry , copolymer , polymer , layer (electronics)
An efficient voltammetric method was developed for the determination of maleic acid at a silver amalgam paste electrode (AgA‐PE) in Britton–Robinson buffer pH 2.0. The experimental parameters, such as pH of Britton–Robinson buffer, type of the supporting electrolyte and activation of the electrode surface were optimized. Under the optimal conditions, a linear response was observed over the 2×10 −6 –1×10 −4 mol L −1 maleic acid concentration range, determination limit being 5×10 −7 mol L −1 . A highly stable response, with a relative standard deviation ( RSD ) of 1.6% for 45 repetitive measurements of 1×10 −4 mol L −1 maleic acid showed that there was no apparent surface passivation indicating the suitability of the method. The method was successfully applied for direct determination of maleic acid in drinking and river water.