Studies And Applications Of New Calixarene Derivatives On Gas Chromatographic Behavior

The thesis includes the following four sections:1.The history about the development of Gas Chromatography is reviewed briefly,and the typical configuration of a Gas Chromatograph is described.The methods of evaluating the Chromatographic properties of capillaries columns was presented.Then,The development of gas chromatography (GC) and preparation of the fused-silica capillaries were described.The applications of the calixarene derivatives used as the stationary phase were summarized.The application of GC in environment monitoring was presented.2.The inner surface of the capillaries was roughened by precipitating sodium chloride suspension.The coloums were coated with polar,weakly polar,and non-polar stationary phase in static method,respectively.3.Three calixarene derivatives with functional groups were used as capillary GC stationary phases.The separation properties of these calixarene derivatives were investigated,showing that they all possess good filmformig properties and fine separation abilities to benzene isomers. The results also indicate that many factorts,including substituted groups, the polarity, the size andπ-πinteractios, played important roles in the separation of positional isomers.4.The separation of benzols in environmental sample had been carried out on mixed stationary phases.The experimental results showed that this method is a simple,rapid,sensitive method and it is very useful.