Anion Effect on the Solvnet Extraction of Alkali Cations with Divenzo-18-crown-6 in 1, 2-Dichloroethane. Voltammetric and Spectroscopic Analysis

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著者

    • Iglesias Rodrigo IGLESIAS Rodrigo
    • Instituto de Investigaciones en Fisicoquimica de Cordoba(INFIQC), Departamento de Fisicoquimica, Facultad de Ciencias Quimicas, Universidad Nacional de Cordoba
    • Dassie Sergio A. DASSIE Sergio A.
    • Instituto de Investigaciones en Fisicoquimica de Cordoba(INFIQC), Departamento de Fisicoquimica, Facultad de Ciencias Quimicas, Universidad Nacional de Cordoba
    • Yudi Lidia M. [他] YUDI Lidia M.
    • Instituto de Investigaciones en Fisicoquimica de Cordoba(INFIQC), Departamento de Fisicoquimica, Facultad de Ciencias Quimicas, Universidad Nacional de Cordoba
    • BARUZZI Ana M.
    • Institute de Investigaciones en Fisicoquimica de Cordoba(INFIQC), Departamento de Fisicoquimica, Facultad de Ciencias Quimicas, Universidad Nacional de Cordoba

抄録

The alkali cations (M+) extraction process from water to 1,2-dichloroethane (DCE) with dibenzo 18-crown-6 (DB18C6) using either picrate (Pi-) or 2,4-dinitrophenolate (DNP-) as counter ions (A-) is analyzed. Picrates are extracted in a higher extent as a consequence of its higher hydrophobicity. Extraction constants (Kext) were determined analyzing the organic phase resulting of the extraction process, either spectrophotometrically or voltammetrically against an aqueous phase containing LiCl. A very good agreement between both methods was obtained except for Cs+. The extraction using DNP- can only be performed provided it is initially present in the aqueous phase. On the other hand, if HDNP is present in the organic phase the extraction process does not occur even at high pH values of the aqueous phase due to the strong interaction with DB18C6. Ion pair constants (KIP) were determined from Kext and Gibbs energy of M+ and A- transfer.

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), 231-236, 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)
    10002414790
  • 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
    4406449
  • 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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