Preparation of Sodium Ion-Sensing Plates Based on a Thin Layer Liquid Membrane Containing a Neutral Ionophore and a Lipophilic Anionic Dye

Hideaki Hisamoto, Sayaka Sato, Kazunari Sato, Dwi Siswanta, Koji Suzuki

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

A sodium ion-sensing plate was prepared as an easily-handled ion-sensing optical chemical sensor (optode) probe. The sensing plate consisted of an ion-sensing liquid thin layer containing a Na + -selective neutral ionophore (16-crown-5 derivatives) and a lipophilic anionic dye (KD-A3), which was placed on a chemically modified (octadecyl silanized) frosted glass plate that was covered with a cellulose dialysis membrane. This ion-sensing plate can easily determine Na + ranging from 10 -4 to10 -1 M by simply dipping the plate into the sample solution. The response time was ca. 80 s for 10 -1 M NaCl with good reproducibility (relative standard deviation (RSD)=±1.33% for ten sequential measurements).

Original languageEnglish
Pages (from-to)127-131
Number of pages5
Journalanalytical sciences
Volume14
Issue number1
DOIs
Publication statusPublished - 1998

Keywords

  • Ion-selective optode
  • Lipophilic anionic dye
  • Neutral ionophore
  • Optical sensor
  • Sensing plate

ASJC Scopus subject areas

  • Analytical Chemistry

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