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タイトル: | Use of Highly Hydrophobic Ionic Liquids for Ion-selective Electrodes of the Liquid Membrane Type |
著者: | NISHI, Naoya https://orcid.org/0000-0002-5654-5603 (unconfirmed) MURAKAMI, Hiroshi YASUI, Yukinori KAKIUCHI, Takashi |
著者名の別形: | 垣内, 隆 |
発行日: | Oct-2008 |
出版者: | Japan Society for Analytical Chemistry |
引用: | Naoya NISHI, Hiroshi MURAKAMI, Yukinori YASUI, and Takashi KAKIUCHI, "Use of Highly Hydrophobic Ionic Liquids for Ion-selective Electrodes of the Liquid Membrane Type". Analytical Sciences., Vol. 24, No.10, p.1315-1320, (2008). |
誌名: | Analytical Sciences |
巻: | 24 |
号: | 10 |
開始ページ: | 1315 |
終了ページ: | 1320 |
抄録: | The phase-boundary potential at the interface between an aqueous KCl solution (W) and a hydrophobic room-temperature ionic liquid (RTIL), trioctylmethylammonium bis(nonafluorobutylsulfonyl)imide ([TOMA+][C4C4N-]), containing dicyclohexano-18-crown-6 (DCH18C6), shows the nernstian response to K+ in W within a polarized potential window of 500 mV between [TOMA+][C4C4N-] and W, demonstrating that hydrophobic RTILs can be used as a nonvolatile ionic medium for liquid-membrane ion-selective electrodes. The complex formation constant of K+ with DCH18C6 in [TOMA+][C4C4N-] is estimated to be on the order of 109 from the upper detection limit using a partition equilibrium model in the presence of a neutral ionophore. The response time of the phase-boundary potential is ∼20 min. Gelled [TOMA+][C4C4N-] also shows the nernstian response to K+, although the upper limit is lower probably due to a change in the solvent properties from the non-gelled [TOMA+][C4C4N-]. The response time of the gelled [TOMA+][C4C4N-] is ∼5 min, shorter than that of the non-gelled [TOMA+][C4C4N-]. |
著作権等: | 2008 © The Japan Society for Analytical Chemistry |
URI: | http://hdl.handle.net/2433/85287 |
DOI(出版社版): | 10.2116/analsci.24.1315 |
PubMed ID: | 18845893 |
出現コレクション: | 学術雑誌掲載論文等 |
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