| 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.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.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.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 |
|