[Determination of alkyl alcohol polyoxyethylene ether by high temperature gas chromatography]

High temperature GC method has been developed for the separation and determination of alkyl alcohol polyoxyethylene ether (AEO). These AEO samples were separated on high temperature Al-coated fused-silica capillary column (0.1 micron bonded methyl silicon stationary phase, 25 m x 0.25 mm i.d.). The components of AEO sample were identified by GC/MS. The free alkyl alcohol and ethoxymer distribution of polyoxyethylene of AEO sample were determined by normalization method. The FID responses of typical components of AEO sample were determined, and their relative deviations were less than 4.1%. The recoveries of the free alkyl alcohol ranged from 96.5% to 98.1%. The relative standard deviations were less than 1.9%. In comparing with previous methods, this method is simple, fast and more reproducible.