Determination of the gibbs free energy of one methylene unit from kovats retention index - Boiling point correlations on DB-210 stationary phase

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Abstract

A novel linear relationship has been derived, by use of the extension of Trouton's rule (i.e. the Troulon-Hildebraiul-Everett rule), to describe the correlation between Kovâts retention indices (I(i)) and boiling point (TB(i)). This thermodynamically based relationship applies to the retention of low-polarity solutes on low-polarity stationary phases. It can also be used for simple correlation between I(i) and TB(i), enabling prediction of the retention parameter (i.e. I(i)) for members of a congeneric set of solutes from their respective boiling points only. This new relationship can. however, also be used in an alternative and simple way of determining the Gibbs free energy of vaporization of one méthylène group (CHi) of/7-alkanes (A//p(cii2))- The performance of the new relationship in purely statistical terms and also in the evaluation of numerical values of the magnitude (ΔμpCH2)) was assessed by comparison of retention data with literature values for selected carbonyl compounds,: i.e. for certain aliphatic aldehydes and ketones. on four stationary phases of different polarity.

Original languageEnglish
JournalActa Chromatographica
Issue number9
Publication statusPublished - 1999

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Boiling point
Gibbs free energy
Carbonyl compounds
Alkanes
Ketones
Vaporization
Aldehydes

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

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title = "Determination of the gibbs free energy of one methylene unit from kovats retention index - Boiling point correlations on DB-210 stationary phase",
abstract = "A novel linear relationship has been derived, by use of the extension of Trouton's rule (i.e. the Troulon-Hildebraiul-Everett rule), to describe the correlation between Kov{\^a}ts retention indices (I(i)) and boiling point (TB(i)). This thermodynamically based relationship applies to the retention of low-polarity solutes on low-polarity stationary phases. It can also be used for simple correlation between I(i) and TB(i), enabling prediction of the retention parameter (i.e. I(i)) for members of a congeneric set of solutes from their respective boiling points only. This new relationship can. however, also be used in an alternative and simple way of determining the Gibbs free energy of vaporization of one m{\'e}thyl{\`e}ne group (CHi) of/7-alkanes (A//p(cii2))- The performance of the new relationship in purely statistical terms and also in the evaluation of numerical values of the magnitude (ΔμpCH2)) was assessed by comparison of retention data with literature values for selected carbonyl compounds,: i.e. for certain aliphatic aldehydes and ketones. on four stationary phases of different polarity.",
author = "K. Heberger and T. Kowalska and M. G{\"o}rg{\'e}nyi",
year = "1999",
language = "English",
journal = "Acta Chromatographica",
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T1 - Determination of the gibbs free energy of one methylene unit from kovats retention index - Boiling point correlations on DB-210 stationary phase

AU - Heberger, K.

AU - Kowalska, T.

AU - Görgényi, M.

PY - 1999

Y1 - 1999

N2 - A novel linear relationship has been derived, by use of the extension of Trouton's rule (i.e. the Troulon-Hildebraiul-Everett rule), to describe the correlation between Kovâts retention indices (I(i)) and boiling point (TB(i)). This thermodynamically based relationship applies to the retention of low-polarity solutes on low-polarity stationary phases. It can also be used for simple correlation between I(i) and TB(i), enabling prediction of the retention parameter (i.e. I(i)) for members of a congeneric set of solutes from their respective boiling points only. This new relationship can. however, also be used in an alternative and simple way of determining the Gibbs free energy of vaporization of one méthylène group (CHi) of/7-alkanes (A//p(cii2))- The performance of the new relationship in purely statistical terms and also in the evaluation of numerical values of the magnitude (ΔμpCH2)) was assessed by comparison of retention data with literature values for selected carbonyl compounds,: i.e. for certain aliphatic aldehydes and ketones. on four stationary phases of different polarity.

AB - A novel linear relationship has been derived, by use of the extension of Trouton's rule (i.e. the Troulon-Hildebraiul-Everett rule), to describe the correlation between Kovâts retention indices (I(i)) and boiling point (TB(i)). This thermodynamically based relationship applies to the retention of low-polarity solutes on low-polarity stationary phases. It can also be used for simple correlation between I(i) and TB(i), enabling prediction of the retention parameter (i.e. I(i)) for members of a congeneric set of solutes from their respective boiling points only. This new relationship can. however, also be used in an alternative and simple way of determining the Gibbs free energy of vaporization of one méthylène group (CHi) of/7-alkanes (A//p(cii2))- The performance of the new relationship in purely statistical terms and also in the evaluation of numerical values of the magnitude (ΔμpCH2)) was assessed by comparison of retention data with literature values for selected carbonyl compounds,: i.e. for certain aliphatic aldehydes and ketones. on four stationary phases of different polarity.

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