低温等离子体具有很强的激发化学反应和处理表面的能力。国外已用于色谱填料表面改性,我们也曾用作制备色谱键合固定相。 利用低温等离子体中的自由基,可以在气相中实现分子链的增长、转移、复合及终止等基元反应、形成惰性聚合物薄膜附着在硅藻土表面,或自由基与硅藻土表面的活性点(如硅醇基)结合,以覆盖其表面的活性点及堵塞其不利于传质的毛细微孔,达到惰化硅藻土的目的。 Low-temperature plasma has a strong ability to fire chemical reactions and handle surfaces. Abroad has been used for surface modification of chromatographic packing, we have also used as preparative chromatography bonded stationary phase. Using low-temperature plasma free radicals can be achieved in the gas phase molecular chain growth, transfer, complex and termination of the elementary reactions, the formation of inert polymer film attached to the surface of diatomite, or free radicals and diatomite surface Active sites (such as silanol groups) to cover the active site on the surface and plug it is not conducive to the mass transfer capillary pores, to achieve the purpose of inert diatomaceous earth.