Multilayer Potassium Sensor Based on Solid-State Coextraction

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抄録

A highly selective solid state multilayer sensor is presented which enables fluorescence optical determination of potassium ions. It is based on co-extraction using valinomycin along with a fluorescent anion, both contained in different layers. The sensor membrane is composed of two layers of highly different lipophilicity. The lipophilic phase contains the carrier valinomycin whilst the hydrophilic phase contains the anionic fluorophore sulforhodamin B. On exposure to potassium ions, the lipophilic phase becomes fluorescent after coextraction of both potassium ions and the anionic fluorophore. To prevent leaching of the dye, an additional blocking layer (nafion) was spread on the sensor. The dynamic range is from 0.1 to 50 mmol/l K+ with very low cross-sensitivity to pH and ionic strength. The response times vary from 1 to 2 h.

収録刊行物

  • Analytical sciences : the international journal of the Japan Society for Analytical Chemistry

    Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 14(1), 163-168, 1998-02-10

    社団法人 日本分析化学会

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各種コード

  • NII論文ID(NAID)
    10002414512
  • NII書誌ID(NCID)
    AA10500785
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09106340
  • NDL 記事登録ID
    4406439
  • 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
    Z54-F482
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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