Properties of All-solid-state pH Sensor Using LaF3 Single Crystal

DOI Open Access
  • KUWATA Shigeki
    Department of Applied Chemistry and Biotechnology, Niihama National College of Technology
  • NAKAYAMA Susumu
    Department of Applied Chemistry and Biotechnology, Niihama National College of Technology

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Other Title
  • ＬａＦ３単結晶を用いた全固体型ｐＨセンサの特性

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Description

An all-solid-state type pH sensor was investigated for the monitoring of pH in the aqueous solution in the tempera-ture range from 25°C to 80°C. The all-solid-state pH sensor consists of two half-cells: an indicator electrode using the LaF3 single crystal and an Ag/AgCl reference electrode coated with Nafion film. The electromotive force of the all-solid-state pH sensor decreased linearly with pH increase in the solution in accordance with the Nernst's equation. The electromotive force was also scarcely influenced in the presence of inorganic ions such as Na+ and Cl-. It was practi-cally confirmed by the pH titration test that the all-solid-state pH sensor behaved similarly to the commercial pH meter with the conventional glass electrode. In addition, the all-solid-state pH sensor operated stably up to 80°C.

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Details 詳細情報について

  • CRID
    1390282679411162240
  • NII Article ID
    130004162506
  • DOI
    10.5182/jaie.19.174
  • ISSN
    18843360
    0915860X
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
    • OpenAIRE
  • Abstract License Flag
    Disallowed

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