Ion-Association Analysis between Inorganic Anions and Symmetrical Tetraalkylammonium Ions in Aqueous-Acetonitrile Media by Capillary Zone Electrophoresis
| dc.creator | Mbuna, Julius | |
| dc.creator | Takayanagi, Toshio | |
| dc.creator | Oshima, Mitsuko | |
| dc.creator | Motomizu, Shoji | |
| dc.date | 2016-07-14T20:48:05Z | |
| dc.date | 2016-07-14T20:48:05Z | |
| dc.date | 2005-08 | |
| dc.date.accessioned | 2018-03-27T08:54:53Z | |
| dc.date.available | 2018-03-27T08:54:53Z | |
| dc.description | Full text can be accessed at https://www.jstage.jst.go.jp/article/bcsj/78/8/78_8_1457/_article | |
| dc.description | Weak ion-association equilibrium was analyzed in a water-acetonitrile solution at 25 °C by capillary zone electrophoresis using an ordinary silica capillary. The ion associates examined were formed between some inorganic anions and symmetrical tetraalkylammonium ions, where a series of acetonitrile compositions up to 62.2% (m/m) were investigated. Ion-association constants, Kass, were determined by analyzing the changes in the electrophoretic mobility; the Kass values for most of the anions increased up to about 47% (m/m) acetonitrile, beyond which they remained constant, or decreased slightly. The ion-association equilibrium between tetramethylammonium and bromide ions in aqueous-acetonitrile and in aqueous-ethanol media were compared through the Gibbs free energy of transfer, which revealed that the extent of the equilibrium in aqueous-acetonitrile media is dependent mainly on the increasing instability of Br-. On the other hand, those in aqueous-ethanol media depend on the instabilities of both tetramethylammonium and bromide ions. | |
| dc.identifier | Mbuna, J., Takayanagi, T., Oshima, M. and Motomizu, S., 2005. Ion-association analysis between inorganic anions and symmetrical tetraalkylammonium ions in aqueous-acetonitrile media by capillary zone electrophoresis. Bulletin of the Chemical Society of Japan, 78(8), pp.1457-1462. | |
| dc.identifier | http://hdl.handle.net/20.500.11810/3197 | |
| dc.identifier | 10.1246/bcsj.78.1457 | |
| dc.identifier.uri | http://hdl.handle.net/20.500.11810/3197 | |
| dc.language | en | |
| dc.title | Ion-Association Analysis between Inorganic Anions and Symmetrical Tetraalkylammonium Ions in Aqueous-Acetonitrile Media by Capillary Zone Electrophoresis | |
| dc.type | Journal Article |