Distribution of a solute between two phases

Katz, Elena; Ogan, Kenneth; Scott, Raymond

doi:10.1016/s0021-9673(01)83371-9

Cited by 97 publications

(51 citation statements)

References 8 publications

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“…This behavior is in accordance with the results [35], according which the slightly polar Tt-IF is adsorbed by the ODS chains in a considerable extent. Methanol and acetonitrile present association differences [34,42] affecting the interaction with the stationary phase as it can be seen in the respective isotherms. In the case of isopropanol, dioxane and tetrahydrofuran, the isotherms rise more steeply than those of methanol and acetonitrile.…”

Section: Figurementioning

confidence: 96%

“…It has been demonstrated [42,44] first, that the association strength with water decreases: methanol-tetrahydrofuran-acetonitrile and secondly, that the binary mixtures with water have a ternary nature, where the third component is an associated specie. We measured the adsorption of pure methanol on hydrophobic silica ODS2 at three important mixture compositions [42].…”

Section: Adsorption Of N-octanol and Pure Methanol From Methanol-watementioning

confidence: 99%

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HPLC study of the adsorption from solutions on two silicagels

1997

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SummaryIn this paper, we report and discuss the adsorption isotherms of hydro-organic mixtures and of compounds used as mobile phase in reversed phase and normal phase high performance liquid chromatography (RP-HPLC and NP-HPLC, respectively). This work is the first attempt to study the solid-liquid interface between two types of chromatographic silica surfaces and pure organic adsorbates from water and from organic eluents by HPLC. Frequently, among the dynamic techniques the method of choice for the measurement of an adsorption isotherm is frontal analysis. We suggest here the combination of the technique based on peak asymmetry calibration and peak profiles, which allows calculations directly from integration data. The group of systems studied permits the analysis of the intermolecular interactions on the silica surface. Particular attention was given to the system methanol-water and the measurement of the adsorption of n-octanol from methanol on RP-silica was also carried out.

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Section: Figurementioning

confidence: 96%

Section: Adsorption Of N-octanol and Pure Methanol From Methanol-watementioning

confidence: 99%

HPLC study of the adsorption from solutions on two silicagels

1997

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“…The formation of alcohol/water complexes were shown to have a significant impact upon protonation of organic acids and bases and is attributed to preferential solubility by water or the organic solvent depending on the nature of the substance. [10][11][12] Table 4 shows the solubility of TATP in the various solvents. If rate (mg/sec) were calculated from the product of the rate constant and solubility (assuming solventwetted solid TATP maintains a film of saturated solution), the decreased solubility negates (i.e.…”

Section: Relative Rates Of Tatp Decomposition With Acidmentioning

confidence: 99%

Factors Influencing Destruction of Triacetone Triperoxide (TATP)

Oxley

Smith

Brady

et al. 2013

Propellants Explo Pyrotec

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“…The different solvent structures between the MeCN/water and MeOH/water systems and the consequences have been well studied by a few research groups. 4,19,[21][22][23][24][25][26] Their conclusions in such studies seem to be useful to explain our results, too.…”

mentioning

confidence: 94%

“…Water-methanol interaction is known to be more favored than water-water interaction or methanolmethanol interaction. [21][22] There are three species in aqueous methanol solution: methanol/water complex, free water, and free methanol. The major species was found the methanol/ water complex when the solution was composed of roughly equal amounts of water and methanol.…”

mentioning

confidence: 99%

The Hydroxyl Group-Solvent and Carbonyl Group-Solvent Specific Interactions for Some Selected Solutes Including Positional Isomers in Acetonitrile/Water Mixed Solvents Monitored by HPLC

2002

Bulletin of the Korean Chemical Society

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We have evaluated the specific hydroxyl group-solvent and carbonyl group-solvent interactions by using an Alltima C18 stationary phase and by measuring the retention data of carefully selected solutes in 60/40, 70/30, and 80/20(v/v%) acetonitrile/water eluents at 25, 30, 35, 40, 45, and 50 o C. The selected solutes are phenol, acetophenone, alkylbenznes(benzene to hexylbenznene), 4 positional isomers of phenylbutanol, 5-phenyl-1-pentanol, 3 positional isomers of alkylarylketone derived from butylbenzene, and 1-phenyl-2-hexanone. The magnitudes of hydroxyl group-acetonitrile/water specific interaction enthalpies are larger than those of carbonyl group-acetonitrile/water specific interaction enthalpies in general while the magnitudes of carbonyl group-methanol/water specific interaction enthalpies are larger than those of hydroxyl group-methanol/water specific interactions. We observed clear discrepancies in functional group-solvent specific interaction among positional isomers. The variation trends of solute transfer enthalpies and entropies with mobile phase composition in the acetonitrile/water system are much different from those in the methanol/water system. The well-known pocket formation of acetonitrile in aqueous acetonitrile mixtures has proven to be useful to explain such phenomena.

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Distribution of a solute between two phases

Cited by 97 publications

References 8 publications

HPLC study of the adsorption from solutions on two silicagels

HPLC study of the adsorption from solutions on two silicagels

Factors Influencing Destruction of Triacetone Triperoxide (TATP)

The Hydroxyl Group-Solvent and Carbonyl Group-Solvent Specific Interactions for Some Selected Solutes Including Positional Isomers in Acetonitrile/Water Mixed Solvents Monitored by HPLC

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