POROUS POLYMERS COATED WITH STATIONARY PHASES - CONTRIBUTION OF THE SUPPORT TO RETENTION BEHAVIOR IN GAS-CHROMATOGRAPHY .1. CHROMOSORB-101 AND ETHOFAT-60-25

The gas chromatographic behaviour of a series of compounds of different polarity on columns of Ethofat 60/25 on Chromosorb P HMDS (an inactive support) and Chromosorb 101 (an active support) was investigated. To observe how the support influences the chromatographic process, we separated the contribution to the retention volume of the interaction phenomena associated with the stationary phase, the solid support and the corresponding interfaces. In some cases the Chromosorb 101 exerts an influence on the process even with high percentages (>10%) of stationary phase. The values of the experimental partition constants of a series of compounds and the factors that contribute to adsorption on these columns are calculated. © 1979 Friedr. Vieweg & Sohn Verlagsgesellschaft mbH.