A novel voltammetric method for the determination of maleic acid using silver amalgam paste electrode

Abdul Niaz, Jan Fischer, Jiří Barek, Bogdan Yosypchuk, Sirajuddin, Muhammad Iqbal Bhanger

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)1719-1722
Number of pages4
JournalElectroanalysis
Volume21
Issue number15
DOIs
Publication statusPublished - 1 Aug 2009
Externally publishedYes

Keywords

  • Amalgam
  • Drinking water
  • Maleic acid
  • River water
  • Silver amalgam paste electrode
  • Voltammetry

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry

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