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

• IGLESIAS Rodrigo

  Instituto de Investigaciones en Físicoquímica de Córdoba (INFIQC), Departamento de Físicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba

• DASSIE Sergio A.

  Instituto de Investigaciones en Físicoquímica de Córdoba (INFIQC), Departamento de Físicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba

• YUDI Lidia M.

  Instituto de Investigaciones en Físicoquímica de Córdoba (INFIQC), Departamento de Físicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba

• BARUZZI Ana M.

  Instituto de Investigaciones en Físicoquímica de Córdoba (INFIQC), Departamento de Físicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba

書誌事項

タイトル別名

• Anion Effect on the Solvent Extraction

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 (K_ext) 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 (K_IP) were determined from K_ext and Gibbs energy of M⁺ and A^- transfer.

収録刊行物

• Analytical Sciences

  Analytical Sciences 14 (1), 231-236, 1998

  社団法人 日本分析化学会

キーワード

• Analytical Chemistry

詳細情報

• CRID: 1390282679230160640
• NII論文ID: 10002414790
• NII書誌ID: AA10500785
• DOI: 10.2116/analsci.14.231
• COI: 1:CAS:528:DyaK1cXhtV2qurg%3D
• ISSN: 13482246
• ISSN: 09106340
• NDL書誌ID: 4406449
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4406449
• Web Site: https://link.springer.com/content/pdf/10.2116/analsci.14.231.pdf
• Web Site: https://link.springer.com/article/10.2116/analsci.14.231/fulltext.html
• Web Site: http://www.jstage.jst.go.jp/article/analsci/14/1/14_1_231/_pdf
• 本文言語コード: en
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