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石英毛细管柱内壁先以动态法涂渍高纯SiO_2悬浮液。用三氯甲烷和二氧六环作溶剂,通氮气干燥后,用动态法涂渍极性固定液如OV—225或OV—275。Grob’s试验混合物用于评价柱子。 石英毛细管柱内壁涂有SiO_2涂层可改善其内壁润湿性及表面活性。所制备柱子涂渍效率为70％左右.柱子的热稳定性和惰性都较好。文中给出若干例子说明柱子的应用情况。
The inner wall of quartz capillary column is firstly coated with high-purity SiO 2 suspension by dynamic method. After using trichloromethane and dioxane as solvent, after drying with nitrogen, a polar fixative such as OV-225 or OV-275 was applied by dynamic method. Grob’s test mix was used to evaluate the column. The inner wall of quartz capillary column coated with SiO_2 coating can improve its wettability and surface activity. The prepared column has an efficiency of about 70%, and the column has better thermal stability and inertness. The article gives a number of examples to illustrate the application of the column.