表面附聚薄壳型单分散高效阳离子柱填料的研制及其性能

 报道了一种新的表面附聚薄壳型阳离子柱填料的简易制备方法。首次合成了单分散高效阳离子柱填料。以10μm的单分散聚苯乙烯 二乙烯基苯(PSTDVB)微球为基球,对其表面季铵化,然后均匀附聚一层磺化的阳离子乳胶(0 2μm),即得到阳离子固定相。分别用碱金属及碱土金属离子对用该填料制成的柱的性能进行了测试,结果表明该柱填料对常见阳离子具有很好的分离效果、良好的重现性和低的检测限。

Preparation of Monodispersed Agglomerated Pellicular Cation Exchange Resins and Its Chromatographic Properties

A new and simple method for the preparation of latex-coated pellicular cation exchanger is introduced. Chromatographic stationary phase of monodispersed agglomerated pellicular cation was prepared for the first time. The monodispersed polyvinylbenzene-divinylbenzene (PSTDVB) particles (10 microns) as substrate beads were functionalized with a tertiary amine on the surface at first and then attached with a layer of sulfonated latex particles (0.2 micron) to give the desired packing. Its chromatographic properties were evaluated by using alkali metals (Li+, Na+, NH4+, K+) and alkaline earth metals (Mg2+, Ca2+). The results showed that the packing is of good resolution, low detection limit, and excellent repeatability for common inorganic cations.