Based on the research in the medium and strong polar glass capillary column, the coating on the barium sulfate micro crystal modified surface with apolar and weak polar liquid phase is investigated.
本文在中等极性和强极性玻璃毛细管柱研究的基础上，对弱极性和非极性固定液在硫酸钡微晶改性表面上的涂渍情况作了详细的研究。
The surface of the packings is modified by chemical process in gas phase or liquid phase.
用气相与液相化学法对填料表面进行改性处理。
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