的分离性能 ;由表征和色谱性能考察结果可知 ,该固定相表面的羟基基本被覆盖 ,因此 ,可在碱性流动相
A kind of stationary phase of silica gel encapsulated by polysiloxane for reversed _ phase high performance liquid chromatography was prepared. The stationary phases were characterized by IR, SEM and elemental analysis. The information about the structure of the stationary phase and its relationship with chromatographic performance were given. The amounts of Si-OH on the surfaces were obtained by titrimetric method. The pore volume and pore size distribution of the stationary phase were determined by mercur...