Magnesium Ion-Selective Optodes Based on a Neutral Ionophore and a Lipophilic Cationic Dye

Dwi Siswanta, Hideaki Hisamoto, Sayaka Sato, Yukihiro Matsumoto, Yasuhiro Koike, Shinji Yamamori, Koji Suzuki

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10 Citations (Scopus)

Abstract

To whom correspondence should be addressed D.S. On leave from Department of Chemistry, Gadjah Mada University, Sekip Utara, Jogjakarta, Indonesia Flow-through type magnesium ion-selective optodes based on a neutral ionophore and a lipophilic cationic dye have been developed. The optodes were prepared by coating pellicular octadecylsilica beads with a lipophilic organic liquid containing magnesium ionophores, a lipophilic cationic dye and a lipophilic anionic additive, and packing the beads into a flow-through optical cell. Two neutral magnesium ionophores (K22B5 and K22B1B5) and two novel lipophilic cationic dyes (KDC-1 and K DC-2) were synthesized and tested for preparing the optodes. Among the developed optodes, an optode based on the ionophore K22B1B5 and a cationic dye (KDC-2) produced the best magnesium ion optode with a relatively high Mg 2+ sensitivity and selectivity, This optode showed a fast and reproducible response to magnesium ion, even in a high concentration of background ions.

Original languageEnglish
Pages (from-to)429-435
Number of pages7
JournalAnalytical Sciences
Volume13
Issue number3
DOIs
Publication statusPublished - 1997 Jan 1

Keywords

  • Cationic dye
  • Magnesium ion
  • Neutral ionophore
  • Optode

ASJC Scopus subject areas

  • Analytical Chemistry

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    Siswanta, D., Hisamoto, H., Sato, S., Matsumoto, Y., Koike, Y., Yamamori, S., & Suzuki, K. (1997). Magnesium Ion-Selective Optodes Based on a Neutral Ionophore and a Lipophilic Cationic Dye. Analytical Sciences, 13(3), 429-435. https://doi.org/10.2116/analsci.13.429