对于气相和超临界流态色谱的小管径毛细管柱(50微米内径),在减活期间,为了防止插入现象,可采用各种高温减活的方法。纯的六甲基二硅烷和六甲基二硅氧烷(D_4的一种组份)是用动态法涂布在柱上;而在高温(450℃)处理前,OV—101的液膜(0.05微米)是用静态法涂布的。于是便可得到了性能优良的减活柱。可以看到,使用此三种方法中的任何一种,其柱的活性并无明显差异。 For small diameter capillary columns (50 μm id) for gas phase and supercritical fluid chromatography, a variety of high temperature deactivation methods are used to prevent insertion during deactivation. Pure hexamethyldisilane and hexamethyldisiloxane (a component of D_4) were coated on the column using a dynamic method; however, before the high temperature (450 ° C) treatment, the liquid film of OV-101 0.05 microns) is applied statically. Thus, a de-activated column with excellent performance can be obtained. It can be seen that with either of these three methods there is no significant difference in column activity.