Evaluation of Gibbs free energy for the transfer of a highly hydrophilic ion from an acidic aqueous solution to an organic solution based on ion pair extraction
| Autor: | Zenko Yoshida, Akihiro Uehara, Sorin Kihara, Hisao Aoyagi, Yumi Yoshida, Yoshihiro Kitatsuji |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Aqueous solution
Extraction (chemistry) Inorganic chemistry Biochemistry Analytical Chemistry Gibbs free energy Ion Nitrobenzene Metal symbols.namesake chemistry.chemical_compound chemistry visual_art symbols visual_art.visual_art_medium Environmental Chemistry Qualitative inorganic analysis Voltammetry Spectroscopy |
| Zdroj: | Analytica Chimica Acta. 452:149-161 |
| ISSN: | 0003-2670 |
| DOI: | 10.1016/s0003-2670(01)01436-2 |
| Popis: | A method to determine the standard Gibbs free energy for the transfer, ΔG°tr, of a highly hydrophilic metal ion from an aqueous solution, W, in the presence of high concentration of H+ to an organic solution, O, was proposed based on the theoretical consideration of the distribution process of ions between W and O. The usefulness of the proposed method was verified experimentally by comparing ΔG°tr of Mg2+ determined by the method with that obtained by voltammetry for the ion transfer at the W|O interface. The O examined were nitrobenzene (NB) and 1,2-dichloroethane (DCE). By applying the proposed method, ΔG°tr of NpO2+, UO22+, NpO22+ and PuO22+ from an acidic W to NB were determined. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect