Potassium ion-selective membrane electrodes based on 1,3-alternate calix[4] crown-5-azacrown-5

Sungeun Kim, Hasuck Kim, Kwan Ho Noh, Seoung Ho Lee, Sung Kuk Kim, Jong Seung Kim

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

A series of 1,3-alternate calix[4]azacrown ethers for which the monoaza and unsymmetrical crowned-azacrown with different side arms were examined as an ionophore for ion-selective polymeric membrane electrode toward potassium ion. Among them, the electrode based on calix[4] crown-5-azacrown-5 with a phenyl group exhibited near Nernstian response for K+ ions over a wide concentration range (1 × 10-5 to 1 × 10-1 M) with a limit of detection of 2 × 10-6 M. It has a fast response time of approximately 2-3 s and can be used for at least 2 months without observing any major deterioration. Selectivity coefficients indicated that interference from all common alkali, alkaline and transition metal ions was very small.

Original languageEnglish
Pages (from-to)709-716
Number of pages8
JournalTalanta
Volume61
Issue number5
DOIs
Publication statusPublished - 2003 Dec 4
Externally publishedYes

    Fingerprint

Keywords

  • Calix[4]azacrown ether
  • Potassium ion-selective electrode
  • Potentiometric detection

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy

Cite this