THERMODYNAMIC STUDY OF ALKANES, ALKYLBENZENES AND CHLOROALKANES RETENTION ON ALKYL-BONDED AND CYANOALKYL-BONDED STATIONARY PHASES IN SUPERCRITICAL-FLUID CHROMATOGRAPHY

Authors
HAGEGE A ROCCA JL DJERKI R
Citation
A. Hagege et al., THERMODYNAMIC STUDY OF ALKANES, ALKYLBENZENES AND CHLOROALKANES RETENTION ON ALKYL-BONDED AND CYANOALKYL-BONDED STATIONARY PHASES IN SUPERCRITICAL-FLUID CHROMATOGRAPHY, Chromatographia, 38(5-6), 1994, pp. 373-380
Citations number
9
Categorie Soggetti
Chemistry Analytical
Journal title
Chromatographia → ACNP
ISSN journal
00095893
Volume
38
Issue
5-6
Year of publication
1994
Pages
373 - 380
Database
ISI
SICI code
0009-5893(1994)38:5-6<373:TSOAAA>2.0.ZU;2-A
Abstract
The SFC retention behaviour of alkanes, alkylbenzenes and chloroalkane was investigated by studying solute/mobile phase/stationary phase int eraction enthalpies. The methylene group and functional group contribu tions to solute retention were calculated in pure CO2. It was shown th at hydrophobic interactions mainly control retention in pure CO2. Inte raction between the polar extremity of C10CN ligands and residual OH g roups on the silica surface was suggested as an explanation of the ret ention obtained on such ligands. This was confirmed by experiments car ried out with modified CO2.