Determination of Na+, K+, Ca2+, and Cl- ions in wood pulp suspension using ion-selective electrodes

Mercedes Vázquez, Konstantin Mikhelson, Sulo Piepponen, Jaakko Räinö, Mika Sillanpää, Ari Ivaska, Andrzej Lewenstam, Johan Bobacka

Research output: Contribution to journalReview articlepeer-review

22 Citations (Scopus)


Ion-selective electrodes were optimized for the determination of Na+, K+ and Ca2+ in wood pulp suspension. The electrodes were based on solvent polymeric membranes (plasticized PVC) containing neutral carriers. The results obtained with the optimized electrodes were compared to those obtained with commercially available ion-selective electrodes including glass electrode for Na+ and solvent polymeric membrane-based electrodes for K+, Ca2+ and Cl-. Additionally, commercially available glass electrodes for pH, as well as a solid-state membrane electrode for Cl- were used. The free ion concentration of pulp samples obtained by ion-selective electrodes was compared to the total concentrations obtained by ICP-AES and XRF.

Original languageEnglish
Pages (from-to)1119-1124
Number of pages6
Issue number13
Publication statusPublished - 2001
Externally publishedYes


  • Calcium
  • Chloride
  • Ion-selective electrode
  • Potassium
  • Process analysis
  • Sodium
  • Wood pulp
  • pH

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry


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