A reversed phase stationary phase of HPLC made by covering a porous copolymer of ethyl-styrene with divinylbenzene on the surface of silica gel is reported.

• 当代应用最广的HPLC固定相中,硅胶基质填料化学稳定性较低,并且由于残存硅羟基而表现所谓第二效应,特别使碱性化合物的峰形拖尾;