Journal of Chromatography A 2012 DOI: 10.1016/j.chroma.2012.01.024 View full text
Yingzhuang Chen, Keyi Wang, Huihui Yang, Yixuan Liu, Shouzhuo Yao, Bo Chen, Lihua Nie, Guangming Xu

Abstract: A novel method to synthesize sulfo/vinyl biphasic silica hybrid monolithic column in one step was developed for on-column preconcentration. In this method, sulfo-based segment is located at the inlet of capillary column, which acts as preconcentration column. It is synthesized by polymerization of 3-sulfopropyl methacrylate potassium salt (SPMA) and vinyltrimethoxysilane (VTMS) with tetramethoxysilane (TOMS). Close to the preconcentration column, a vinyl functionalized segment is formed and serves as separatio…

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