Selectivity in the Coextraction of Cation and Anion by Electrochemically Modulated Liquid-Liquid Extraction
dc.contributor.author | Berduque, A. | |
dc.contributor.author | Arrigan, Damien | |
dc.date.accessioned | 2017-01-30T12:33:47Z | |
dc.date.available | 2017-01-30T12:33:47Z | |
dc.date.created | 2015-09-29T01:51:52Z | |
dc.date.issued | 2006 | |
dc.identifier.citation | Berduque, A. and Arrigan, D. 2006. Selectivity in the Coextraction of Cation and Anion by Electrochemically Modulated Liquid-Liquid Extraction. Analytical Chemistry. 78 (8): pp. 2717-2725. | |
dc.identifier.uri | http://hdl.handle.net/20.500.11937/22822 | |
dc.identifier.doi | 10.1021/ac0521192 | |
dc.description.abstract |
Electrochemistry at the interface between two immiscible electrolyte solutions has been presented as a method of electrochemically modulated liquid-liquid extraction, where ions in a mixture can be selectively partitioned as a function of the applied interfacial potential difference. In this study, a mixture comprising 4-octylbenzenesulfonate (4-OBSA-) and tetraethylammonium (TEA+) ions was evaluated. The application of negative potential differences enabled the selective extraction of 4-OBSAinto the organic phase, and more positive potential differences enabled the selective extraction of TEA+. However, intermediate potentials lead to the coextraction of both ions into the organic phase, with apparent selectivity for TEA+ over 4-OBSA-. An increased concentration of either ion in the mixture inhibited the extraction response of the other ion, but the order of the extraction at these intermediate potentials was always TEA+ followed by 4-OBSA-. The reasons for the selectivity for the cation over the anion are discussed. | |
dc.publisher | American Chemical Society | |
dc.title | Selectivity in the Coextraction of Cation and Anion by Electrochemically Modulated Liquid-Liquid Extraction | |
dc.type | Journal Article | |
dcterms.source.volume | 78 | |
dcterms.source.number | 8 | |
dcterms.source.startPage | 2717 | |
dcterms.source.endPage | 2725 | |
dcterms.source.issn | 0003-2700 | |
dcterms.source.title | Analytical Chemistry | |
curtin.accessStatus | Fulltext not available |