Minimizing Activity and Liquid Junction Errors in Direct Potentiometry by using the Optimal Standard Solution

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In quantitative analysis by direct potentiometry, e. g. when using ion-selective electrodes, situations arise where corrections appear necessary to account for activity coefficient and liquid junction potential effects. It is shown here that one can select an optimal composition for the standard or reference solution and thereby achieve two goals simultaneously: to reduce the error terms to a minimum and to eliminate the necessity of any corrective calculations.

Original languageEnglish
Pages (from-to)1293-1303
Number of pages11
JournalAnalytical Letters
Issue number5
Publication statusPublished - 1989



  • ion-selective electrodes
  • Potentiometry
  • standardization

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy
  • Electrochemistry
  • Biochemistry, medical
  • Clinical Biochemistry
  • Biochemistry

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