Abstract
Flow-through type fiber-optic silver ion selective optodes based on novel cyclic and noncyclic thia crown ether compounds and a lipophilic anionic indicator dye have been developed. Pellicular octadecylsilica beads were coated with a lipophilic organic liquid containing the thia ether compound as the silver ion selective ionophore and LAD-3 as the color changeable indicator dye. The optode system was constructed by packing these color changeable ion sensing beads in a flow-through optical cell (cell volume, 7 μL) having a quartz window attached directly to the distal end of a bifurcated optical fiber. The optode based on a lipophilic thia crown ether that has two sulfur atoms (tetradecyl-14-dithiacrown-4) exhibited the most sensitive response to silver ion of all the optodes investigated. This optode could detect silver ion in concentrations ranging from 10-6 to 10-2 M at pH 7.0 with 0.05 M Tris-H2SO4 buffer as the flowing solution by measuring the absorbance change in the sensing beads at 516 nm. This optode showed a highly selective response to Ag+ without any interference from other transition metal ions, except for Hg2+, up to 10-3 M, as well as alkali metal and alkaline earth metal ions up to 1 M. Optodes employing highly lipophilic ionophores showed good reproducible response to Ag+ for at least 2 weeks.
| Original language | English |
|---|---|
| Pages (from-to) | 1315-1321 |
| Number of pages | 7 |
| Journal | Analytical Chemistry |
| Volume | 67 |
| Issue number | 8 |
| Publication status | Published - 1995 Apr 15 |
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ASJC Scopus subject areas
- Analytical Chemistry
Cite this
Silver Ion Selective Optodes Based on Novel Thia Ether Compounds. / Hisamoto, Hideaki; Nakagawa, Eriko; Nagatsuka, Kazuhisa; Abe, Yoko; Sato, Sayaka; Siswanta, Dwi; Suzuki, Koji.
In: Analytical Chemistry, Vol. 67, No. 8, 15.04.1995, p. 1315-1321.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Silver Ion Selective Optodes Based on Novel Thia Ether Compounds
AU - Hisamoto, Hideaki
AU - Nakagawa, Eriko
AU - Nagatsuka, Kazuhisa
AU - Abe, Yoko
AU - Sato, Sayaka
AU - Siswanta, Dwi
AU - Suzuki, Koji
PY - 1995/4/15
Y1 - 1995/4/15
N2 - Flow-through type fiber-optic silver ion selective optodes based on novel cyclic and noncyclic thia crown ether compounds and a lipophilic anionic indicator dye have been developed. Pellicular octadecylsilica beads were coated with a lipophilic organic liquid containing the thia ether compound as the silver ion selective ionophore and LAD-3 as the color changeable indicator dye. The optode system was constructed by packing these color changeable ion sensing beads in a flow-through optical cell (cell volume, 7 μL) having a quartz window attached directly to the distal end of a bifurcated optical fiber. The optode based on a lipophilic thia crown ether that has two sulfur atoms (tetradecyl-14-dithiacrown-4) exhibited the most sensitive response to silver ion of all the optodes investigated. This optode could detect silver ion in concentrations ranging from 10-6 to 10-2 M at pH 7.0 with 0.05 M Tris-H2SO4 buffer as the flowing solution by measuring the absorbance change in the sensing beads at 516 nm. This optode showed a highly selective response to Ag+ without any interference from other transition metal ions, except for Hg2+, up to 10-3 M, as well as alkali metal and alkaline earth metal ions up to 1 M. Optodes employing highly lipophilic ionophores showed good reproducible response to Ag+ for at least 2 weeks.
AB - Flow-through type fiber-optic silver ion selective optodes based on novel cyclic and noncyclic thia crown ether compounds and a lipophilic anionic indicator dye have been developed. Pellicular octadecylsilica beads were coated with a lipophilic organic liquid containing the thia ether compound as the silver ion selective ionophore and LAD-3 as the color changeable indicator dye. The optode system was constructed by packing these color changeable ion sensing beads in a flow-through optical cell (cell volume, 7 μL) having a quartz window attached directly to the distal end of a bifurcated optical fiber. The optode based on a lipophilic thia crown ether that has two sulfur atoms (tetradecyl-14-dithiacrown-4) exhibited the most sensitive response to silver ion of all the optodes investigated. This optode could detect silver ion in concentrations ranging from 10-6 to 10-2 M at pH 7.0 with 0.05 M Tris-H2SO4 buffer as the flowing solution by measuring the absorbance change in the sensing beads at 516 nm. This optode showed a highly selective response to Ag+ without any interference from other transition metal ions, except for Hg2+, up to 10-3 M, as well as alkali metal and alkaline earth metal ions up to 1 M. Optodes employing highly lipophilic ionophores showed good reproducible response to Ag+ for at least 2 weeks.
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UR - http://www.scopus.com/inward/citedby.url?scp=0001106844&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0001106844
VL - 67
SP - 1315
EP - 1321
JO - Analytical Chemistry
JF - Analytical Chemistry
SN - 0003-2700
IS - 8
ER -