Temperature changes of sorption parameters of di-n-alkylketones and methylcyclohexanones in capillary gas chromatography
- 30 Downloads
The gas chromatographic behavior of di-n-alkylketones and isomeric methylcyclohexanones at variable temperatures in the isothermal runs has been studied using three capillary columns coated with SE-30, OV-225, and PEG-40M/KF stationary phases. The retention indices and their temperature increments were determined, and the partial molar free energies of the compounds under study were calculated. A linear dependence of the values of the partial molar free energy of sorption on the homologue number in di-n-alkylketones is not observed for the first member on the nonpolar SE-30 phase and for the third member on the polar OV-225 and PEG-40M/KF phases.
Key wordscapillary gas chromatography di-n-alkylketones methylcyclohexanones retention indices temperature increments partial molar free energy of sorption
Unable to display preview. Download preview PDF.
- 4.R. V. Golovnya, A. L. Samusenko, and V. A. Lyapin,Zh. Anal. Khim., 1988,43, 311 [J. Anal. Chem. USSR, 1988,43 (Engl. Transl.)].Google Scholar
- 5.R. v. Golovnya, A. L. Samusenko, A. V. Vasil'ev, and T. E. Kuz'menko Inventor's Certificate USSR No. 1132227,Bull. Izobret. [Bull. Invent.], 1984, No. 48, 160 (in Russian).Google Scholar
- 7.R. V. Golovnya and A. L. Samusenko,Izv. Akad. Nauk SSSR, Ser. Khim., 1985, 517 [Bull. Acad. Sci. USSR, Div. Chem. Sci., 1985,34, 469 (Engl. Transl.)].Google Scholar