Characteristics of the Potential Response to Ethanol by Flow-through Amphiphilic Ion Sensor and Determination of Ethanol in Liquors.

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  • HATTORI Toshiaki
    Research Center for Chemometrics, Toyohashi University of Technology
  • KATO Masanao
    Research Center for Chemometrics, Toyohashi University of Technology

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タイトル別名
  • Characteristics of the Potential Respon

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The potential response to ethanol was examined by a flow-through ion sensor using a plasticized poly(vinyl chloride) membrane doped with several amphiphilic ions. When an amphiphilic cation was used, a negative potential slope to ethanol was observed. When an amphiphilic anion was used, however, a positive potential slope was observed. These potential slopes were affected by the hydrophobicity and the shape of the amphiphilic ions. The results of these potential slopes supported the mechanism previously proposed for the potential response to anionic polyelectrolyte, that is, the change of phase-transfer force of the amphiphilic ion from the membrane to the sample solution dominated the potential response. The present ISE method was applied to the determination of ethanol in several liquors. The determination values agreed well with those obtained by a gas chromatographic method.

収録刊行物

  • Analytical Sciences

    Analytical Sciences 13 (6), 975-979, 1997

    社団法人 日本分析化学会

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