ITIESの電気化学と溶媒抽出 -Naphtho-15-Crown-5によるアルカリ金属およびアルカリ土類金属イオンの選択的促進移動 Electrochemistry at ITIES and Solvent Extraction -Selective Ion-Transfer of Alkali and Alkaline Earth Metal Ions Facilitated by Naphtho-15-crown-5

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著者

    • 土江 秀和 DOE Hidekazu
    • 大阪市立大学大学院理学研究科物質分子系専攻 Department of Chemistry, Graduate School of Science, Osaka City University

抄録

Since interesting selectivity for K<SUP>+</SUP> over Na<SUP>+</SUP> by naphtho-15-crown-5 (N15C5) has been reported in studies of ion-selective electrode and solvent extraction, the ion-transfers of alkali and alkaline earth metal cations facilitated by N15C5 have been studied electrochemically at ITIES, Interface of Two Immiscible Electrolyte Solutions between an aqueous and an organic (nitrobenzene or 1, 2-dichloroethane) phases. It is clearly observed that K<SUP>+</SUP> and Ca<SUP>2+</SUP> transfer across the ITIES forming 1:2 (cation to ligand) complex but the other metal ions forming 1:1 complex. Then the values of some equilibrium constant in the course of the interfacial transfer are in beautiful agreement between the electrochemical and the solvent extraction results. The stoichiometries of those complex ions have been also studied by electrospray ionization mass spectrometry directly. These results have partly supported the conclusions from the electrochemical study. Interestingly, on the other hand, it has been also observed that a bilayer phospholipid membrane doped by N15C5 selects K<SUP>+</SUP> over Na<SUP>+</SUP>.

収録刊行物

  • ポーラログラフィー  

    ポーラログラフィー 45(1), 17-24, 1999-05-20 

    日本ポーラログラフ学会

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各種コード

  • NII論文ID(NAID)
    10002466880
  • NII書誌ID(NCID)
    AN00093235
  • 本文言語コード
    JPN
  • 資料種別
    REV
  • ISSN
    0034-6691
  • NDL 記事登録ID
    4735890
  • NDL 雑誌分類
    ZP4(科学技術--化学・化学工業--分析化学)
  • NDL 請求記号
    Z17-150
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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