2004
DOI: 10.1246/bcsj.77.1465
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An Investigation of Weak Ion Association Equilibria between Inorganic Anions and Tetraalkylammonium Ions in Ethanol–Aqueous Media Using Capillary Zone Electrophoresis

Abstract: Weak ion association equilibria between inorganic anions, ranging in charge from −1 to −4, and symmetrical tetraalkylammonium ions, R4N+ (R = Me, Et, Pr, Bu, n-Am), were investigated in formate buffer solutions containing a variable composition of ethanol (0–62.9% (m/m)). The individual effective mobilities of the inorganic anions in a series of tetraalkylammonium chloride solutions were measured using an ordinary silica capillary maintained at 25.0 ± 0.1 °C under a negative potential (−10 kV) and direct UV de… Show more

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Cited by 9 publications
(20 citation statements)
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“…A fair agreement exists between the data determined by CZE and those obtained by conductivity measurement in pure aqueous solution (Table 1). Similarly, most of the trends shown by the association constants between inorganic anions and tetraalkylammonium ions in aqueous-ethanol [25] are also observed in this analysis (Table 1). In general, K ass between the inorganic anions and the tetraalkylammonium ions showed an increase as the content of dioxane content in the migrating buffer are increased.…”
Section: Effect Of Dioxane On Mobility Of Anions and Association Conssupporting
confidence: 76%
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“…A fair agreement exists between the data determined by CZE and those obtained by conductivity measurement in pure aqueous solution (Table 1). Similarly, most of the trends shown by the association constants between inorganic anions and tetraalkylammonium ions in aqueous-ethanol [25] are also observed in this analysis (Table 1). In general, K ass between the inorganic anions and the tetraalkylammonium ions showed an increase as the content of dioxane content in the migrating buffer are increased.…”
Section: Effect Of Dioxane On Mobility Of Anions and Association Conssupporting
confidence: 76%
“…Most of the mobility trends of the inorganic anions in aqueous-dioxane media are similar to those exhibited in aqueous-ethanol media [25]. As shown in Fig.…”
Section: Effect Of Dioxane On Mobility Of Anions and Association Conssupporting
confidence: 66%
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