分级印迹介孔硅聚合物：双酚 A 的高效固相萃取剂。
Hierarchically imprinted mesoporous silica polymer: an efficient solid-phase extractant for bisphenol A.
机构信息
Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150001, China.
Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150001, China.
出版信息
Talanta. 2014 Mar;120:255-61. doi: 10.1016/j.talanta.2013.12.001. Epub 2013 Dec 17.
Improving the site accessibility of molecularly imprinted polymer (MIP) is one of the biggest challenges for application of MIP in solid-phase extraction (SPE). Hierarchically imprinted mesoporous silica polymer was prepared with semicovalently bond imprinting methods based on MCM-41 and SBA-15 mesostructures, aiming to improve the site accessibility of MIP and increase the efficiency of molecularly imprinted-SPE. Characterization and performance tests of the obtained products revealed that molecularly imprinted SBA-15 (MIP-SBA-15) not only retained the mesoporous structure of SBA-15, but also displayed excellent selectivity of MIP to the target molecule. As the MIP-SBA-15 were adopted as the adsorbents of solid-phase extraction for detecting bisphenol A in spiked water samples, the recoveries of spiked samples more than 87%, which reveals that the molecularly imprinted SBA-15 were efficient SPE adsorbents for bisphenol A.
提高分子印迹聚合物（MIP）的键合点位可及性是将 MIP 应用于固相萃取（SPE）的最大挑战之一。本研究采用半共价键合印迹方法，以 MCM-41 和 SBA-15 介孔结构为模板，制备了具有分级印迹结构的介孔硅聚合物，旨在提高 MIP 的键合点位可及性，增加分子印迹固相萃取的效率。对所得产物的表征和性能测试表明，分子印迹 SBA-15（MIP-SBA-15）不仅保留了 SBA-15 的介孔结构，而且对目标分子表现出优异的 MIP 选择性。当 MIP-SBA-15 被用作固相萃取吸附剂检测加标水样中的双酚 A 时，加标样品的回收率均在 87%以上，这表明分子印迹 SBA-15 是双酚 A 的高效 SPE 吸附剂。
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