Activity coefficients of rubidium chloride and cesium chloride in methanol–water mixtures and a comparative study of Pitzer and Pitzer–Simonson–Clegg models (298.15K)

Cui, Ruifang; Hu, Mancheng; Jin, Lihua; Li, Shu-Ni; Jiang, Yucheng; Shuping, Xia

doi:10.1016/j.fluid.2006.11.016

Cited by 34 publications

(32 citation statements)

References 19 publications

(18 reference statements)

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“…10,11 The Cs-ISE was prepared by ourselves. 14 The Br-ISE (model 302) was obtained from Jiangsu Electroanalytic Instrument Factory.…”

Section: Methodsmentioning

confidence: 99%

Activity Coefficients for CsBr + MeOH/EtOH + H₂O Ternary Systems Using Potentiometric Measurements at 298.15 K

Tang

et al. 2012

J. Chem. Eng. Data

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In this paper, the mean activity coefficients for CsBr, as well as the osmotic coefficients, the excess Gibbs free energies, the Gibbs energies of transference, and the primary hydration in different MeOH−water and EtOH−water mixtures at 298.15 K are calculated by potentiometric measurements. The cell used in this work contains two ion selective electrodes (ISEs): Cs-ISE|CsBr(m), ROH(w), H 2 O(1 − w)|Br-ISE (R = Me and Et), and the mass fraction of ROH in the mixture (w) was varied between 0 and 0.3 in 0.1 unit steps. The experimental data were correlated very well by the thermodynamics equations of Pitzer, modified Pitzer, and Debye−Huckel models.

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“…10,11 The Cs-ISE was prepared by ourselves. 14 The Br-ISE (model 302) was obtained from Jiangsu Electroanalytic Instrument Factory.…”

Section: Methodsmentioning

confidence: 99%

Activity Coefficients for CsBr + MeOH/EtOH + H₂O Ternary Systems Using Potentiometric Measurements at 298.15 K

Tang

et al. 2012

J. Chem. Eng. Data

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“…Tables 8.7 and 8.9). For CsCl, the data were obtained from Table 2 in Cui et al 10 The following quadratic equations were used for the four salts:…”

Section: Channelmentioning

confidence: 99%

Further analysis of counterion permeation through anion-selective glycine receptor channels

Barry

Sugiharto²,

Lewis³

2010

Channels

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The functional role of ion channels, which allow counterion permeation, depends critically on their relative anion-cation relative selectivity. From whole-cell patch clamp reversal potential measurements under dilution potential conditions, we have already shown that anion-cation permeabilities of anion-selective wild-type (WT) and mutant (with larger pore diameter) glycine receptor (GlyR) channels in the presence of Li(+), Na(+) and Cs(+) counterions, were inversely correlated with the equivalent hydration diameter of the counterion, with chloride-cation permeability increasing as counterion equivalent hydration diameter increased with respect to the channel minimum pore diameter. Corrected for liquid junction potentials (LJPs; using ion activities), the previous chloride-cation permeabilities for the alkali cations were 23.4 (Li(+)), 10.9 (Na(+)) and 5.0 (Cs(+)) for the smaller WT channel. Further analysis to incorporate an initial offset potential correction, to fully allow for slight differences between internal cell composition and external control salt solution, changed the above permeability ratios to 30.6 (Li(+)), 11.8 (Na(+)) and 5.0 (Cs(+)), adding enhanced support for the inverse correlation between anion-to-counterion permeability ratio and equivalent hydrated counterion diameter relative to channel pore diameter (erroneously ignoring LJPs reduces each permeability ratio to about 4). Also, new direct measurements of LJPs (for NaCl and LiCl salt dilutions) using a 3M KCl-agar reference salt bridge (with freshly-cut end for each solution composition change) have shown excellent agreement with calculated LJPs (using ion activities), validating calculated LJP values. We continue to suggest that counterion cations permeate with chloride ions as neutral pairs.

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“…Through equation (5), The mixing ionic parameters h Cs,Ca , w Cs,Ca,Cl and the standard deviations (r) evaluated by using multiple linear regression technique and are given in table 3. Then, the activity coefficients of CaCl 2 and the osmotic coefficients U for the ternary system at different ionic strengths fractions were calculated by substituting the regressed mixing ionic parameters from equations (6) and (8). These outcomes are also together listed in table 2.…”

Section: Pitzer Equationmentioning

confidence: 99%

“…The ternary system of the present study (CsCl + CaCl 2 + H 2 O) is one part of our series work dealing with the thermodynamic properties of rubidium and cesium salts [8][9][10]. As we known, the system (CsCl + CaCl 2 + H 2 O) was not studied in previous papers.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic study of the mixed system (CsCl+CaCl2+H2O) by EMF Measurements at T=298.15K

Zhang

Zhai

et al. 2009

The Journal of Chemical Thermodynamics

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Activity coefficients of rubidium chloride and cesium chloride in methanol–water mixtures and a comparative study of Pitzer and Pitzer–Simonson–Clegg models (298.15K)

Cited by 34 publications

References 19 publications

Activity Coefficients for CsBr + MeOH/EtOH + H₂O Ternary Systems Using Potentiometric Measurements at 298.15 K

Activity Coefficients for CsBr + MeOH/EtOH + H₂O Ternary Systems Using Potentiometric Measurements at 298.15 K

Further analysis of counterion permeation through anion-selective glycine receptor channels

Thermodynamic study of the mixed system (CsCl+CaCl2+H2O) by EMF Measurements at T=298.15K

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Activity coefficients of rubidium chloride and cesium chloride in methanol–water mixtures and a comparative study of Pitzer and Pitzer–Simonson–Clegg models (298.15K)

Cited by 34 publications

References 19 publications

Activity Coefficients for CsBr + MeOH/EtOH + H2O Ternary Systems Using Potentiometric Measurements at 298.15 K

Activity Coefficients for CsBr + MeOH/EtOH + H2O Ternary Systems Using Potentiometric Measurements at 298.15 K

Further analysis of counterion permeation through anion-selective glycine receptor channels

Thermodynamic study of the mixed system (CsCl+CaCl2+H2O) by EMF Measurements at T=298.15K

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Activity Coefficients for CsBr + MeOH/EtOH + H₂O Ternary Systems Using Potentiometric Measurements at 298.15 K

Activity Coefficients for CsBr + MeOH/EtOH + H₂O Ternary Systems Using Potentiometric Measurements at 298.15 K