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Abstrakty
In this paper we present a new model of describing the temperature-dependence of Kováts retention indices. It is regarded as a "kinetic" model, because it uses certain elements of chemical kinetics (e.g. the enthalpy and entropy of activation, ΔH≠ and ΔS≠) for thermodynamic description of retention processes in gas chromatography. It was founded on the transition-state theory (TST) and involves the Eyring equation. Mathematically it can be considered as an extended Antoine-type equation, although it surpasses that relationship owing to its greater flexibility and hence its better fitting of experimental results. It also anticipates the physical minima which occasionally occur when retention indices are plotted against the measure-ment temperature.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
65--79
Opis fizyczny
Bibliogr. 20 poz., rys., tab.
Twórcy
autor
- Institute of Chemistry, Silesian University, 9 Szkolna Street, 40-006 Katowice, Poland
autor
- Institute of Chemistry, Silesian University, 9 Szkolna Street, 40-006 Katowice, Poland
autor
- Institute of Chemistry, Silesian University, 9 Szkolna Street, 40-006 Katowice, Poland
Bibliografia
- [1] A. T. James and A. J. P. Martin, Biochem. J., 50, 679 (1952)
- [2] E. Kováts, Helv. Chim. Acta, 41, 1915 (1958)
- [3] M. V. Budahegyi, E. R. Lombosi, T. S. Lombosi, S. Y. Mészáros, Sz. Nyiredy, G. Tarján, I. Timár, and J. M. Takács, J. Chromatogr., 271, 213 (1983)
- [4] G. Tarján, Sz. Nyiredy, M. Györ, E. R. Lombosi, T. S. Lombosi, M. V. Budahegyi, S. Y. Mészáros, and J. M. Takács, J. Chromatogr., 472, 1 (1989)
- [5] B. Gawdzik and A. Patrykiejew, Chem. Anal., 32, 291 (1987)
- [6] N. Dimov and Ov. Mekenyan, Anal. Chim. Acta, 212, 317 (1988)
- [7] K. Héberger, Anal. Chim. Acta, 233, 161 (1989)
- [8] C. T. Peng, S. F. Ding, R. L. Hua, and Z. C. Yang, J. Chromatogr., 436, 137 (1988)
- [9] C. T. Peng and Z. C. Yang, J. Chromatogr., 586, 85 (1991)
- [10] S. Miertus, V. Jakus, and E. Matisová, Chromatographia, 30, 144 (1990)
- [11] J. M. Santiuste and J. M. Takács, Model Chem, 134, 407 (1997)
- [12] J. A. García-Domínguez, J. M. Santiuste, and Q. Dai, J. Chromatogr. A., 787, 145 (1997)
- [13] J. M. Santiuste, Q. Dai, and J. M. Takács, Model Chem, 135, 183 (1998)
- [14] K. Héberger and T. Kowalska, Chromatographia, 48, 89 (1998)
- [15] K. Héberger and T. Kowalska, Chemometr. Intell. Lab. Syst., 47, 205 (1999)
- [16] K. Héberger, T. Kowalska, and M. Görgényi, Acta Chromatogr., 9, 25 (1999)
- [17] V. Paćakova and L. Feltl, Chromatographic Retention Indices as an Aid to Identification of Organic Compounds, Ellis Horwood, New York, 1992
- [18] P. Hennig and W. Engewald, Chromatographia, 38, 93 (1994)
- [19] K. Héberger, T. Kowalska, and M. Görgényi, paper in preparation
- [20] St. Hawkes, Chromatographia, 25, 313 (1988)
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BAT3-0026-0024