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强极性固定液的表面张力很大,在未经处理的玻璃毛细管壁上不易均匀铺展,这样给制备强极性玻璃毛细管柱带来了困难。近几年来,国内外学者用一些方法制备了N,N-双(-氰乙基)甲酰胺(简称BCEF,以下均用简称),OV-275等强极性毛细管柱。1980年,R.G.Mathews等人,首次用表面改性硅胶PZ-250制成了BCEF柱,我们在此基础上,研究了这种柱子的性能,并成功地制备了高效PZ-250-BCEF柱。由于PZ-250是一种特制的改性硅胶,制备
Strong polar fixative surface tension is very large, in the untreated glass capillary wall is not easy to spread evenly, so to prepare a strong polar glass capillary column has brought difficulties. In recent years, domestic and foreign scholars have prepared some strongly polar capillary columns such as N, N-bis (cyanoethyl) formamide (abbreviated as BCEF, hereinafter referred to as abbreviated as) and OV-275 by some methods. In 1980, R.G. Mathews et al., For the first time made the BCEF column with surface modified silica gel PZ-250. Based on this, we studied the performance of this column and successfully prepared the high performance PZ-250-BCEF column. As PZ-250 is a special modified silica gel, preparation