Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, Shanghai 200237, PR China.
Talanta. 2012 Aug 30;98:277-81. doi: 10.1016/j.talanta.2012.07.002. Epub 2012 Jul 13.
The rod-shaped SBA-15-C(18) mesoporous nanoparticles were incorporated into hybrid organic-inorganic monolithic column with aminopropyl moiety to develop novel stationary phases with mixing mechanism of reverse phase and ion exchange. Experimental conditions including dispersion pattern, nanoparticles percentage were optimized for simple and stable column preparation. The monolithic columns were evaluated with mixture of organic acids in capillary electrochromatography (CEC) mode and the column efficiency reaches 280, 000 plates/m. The results indicate that the column containing nanoparticles enhances both selectivity and column efficiency due to high specific surface area of nanoparticles and mixing separation mechanism.
棒状 SBA-15-C(18)介孔纳米粒子被掺入具有氨丙基部分的混合有机-无机整体柱中，以开发具有反相和离子交换混合机制的新型固定相。实验条件包括分散模式、纳米粒子百分比等都进行了优化，以实现简单、稳定的柱制备。在毛细管电色谱（CEC）模式下，使用有机酸混合物对整体柱进行了评估，柱效率达到了 280,000 板/米。结果表明，由于纳米粒子的高比表面积和混合分离机制，含有纳米粒子的柱增强了选择性和柱效率。
