Characterization of crude oils by inverse gas chromatography

Surface characterization of okra hydrocolloid extract by inverse gas chromatography (IGC)

“…This technique has been employed for the characterization of a variety of organic materials such as copolymers [10][11][12], polymer blends [13], hyperbranched polymers [14,15], pharmaceutical materials [16], powders [17,18], crude oils [19], nanomaterials [20], fibers [21], and some non-food carbohydrates [22,23].…”

Measurement of activity coefficients at infinite dilution in 1-hexadecyl-3-methylimidazolium tetrafluoroborate ionic liquid

“…Such a theory has however been frequently used in non-regular solutions to elaborate thermodynamic models. As an example, this concept has been used to predict phase behavior of ionic liquids [22,23], of inorganic salts [24], and of asphaltene [25,26]. Hildebrand postulated that the maximum of solubility is observed when the solute and solvent cohesive energy densities are identical.…”

Inverse gas chromatographic study of the oxidation stability of lubricating base oil via linear solvation energy relationship

“…The used descriptor values of the used solutes in the data analysis for the solvation parameter models for the investigated oxidized oils are summarized in Table III. 14,15 The solvation properties of the investigated lubricating oils at different oxidation times were established by the relationship between the values of net retention volumes for the probing solutes and their descriptor values by multilinear relationship giving the characteristic system (oxidized oil) constants and statistics for the fit, which are summarized in Tables IV and V. The general statistics indicated that the models provide a good representation of the experimental data. Although the obtained correlation coefficient values of logarithmic form of LSER relation, i.e.…”