【摘要】 以苯乙烯-二乙烯基苯微球为基质,建立了一种新型离子色谱固定相的制备方法。在基质微球表面合成一层聚缩水甘油甲基丙烯酸酯聚合物层(GMA),随后与甲胺及1,4-丁二醇二环氧甘油醚(BDDE)交替反应,与其表面接枝上带正电荷的季铵基团,可用于阴离子的分离。通过改变接枝反应的次数,控制交换树脂的交换容量。自制色谱固定相能够用于7种常规阴离子分离分析,并用于自来水中常规阴离子的检测。分离检测结果可与商用离子色谱柱相比,同时水负峰能与氟离子完全分离,不影响氟离子的定量检测。更多还原

【Abstract】 This work described a novel method for preparation of a new anion exchange stationary phase using polystyrene-divinylbenzene(PS-DVB)microspheres as matrix.Firstly, a polyglycidyl methacrylate polymer layer(GMA)was grafted onto the surface of the matrix microspheres.Then the grafted surface reacted in turn with methylamine(MA) and 1, 4-Butanediol diglycidyl ether(BDDE) which resulted in the formation of the positively charged quaternary ammonium groups that is useful for anion separation.By changing the number of the grafting reaction, the anion-exchange capacity of stationary phase were controlled.The home-made stationary phase can be used to analyze more than 7 kinds of common anions and was used to detect common anions in tape water.Comparing with commercial stationary phase, the home-made stationary phase allowed water negative peaks being separated from fluoride ion, which in the meantime did not interfere the quantitative determination of the fluoride ions.更多还原