The immobilization of a silicone stationary phase (SE-30) on Chromosorb W/AW for use in packed column gas chromatography was initiated by dicumyl peroxide (DCUP). Appropriate peroxide concentrations were studied and the immobilization procedure is described. Solvent extractions and chromatographic testing, as well as thermal stability and on-column solvent rinsing, showed that preparation of an SE-30 phase immobilized on Chromosorb W/AW using DCUP is a simple method that produces efficient and non-extractable stationary phases.
gas chromatography; packed columns; organic peroxide immobilization; immobilized stationary phases
