Preparation of particle-fixed silica monoliths used in capillary electrochromatography |
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| Authors: | Qu Qishu Tang Xiaoqing Wang Chengyin Yang Gongjun Hu Xiaoya Lu Xiao Liu Yin Yan Chao |
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| Affiliation: | Jiangsu Key Laboratory of Environmental Materials and Environmental Engineering, College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, China. quqishu@gmail.com |
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| Abstract: | Fused-silica capillarieswere packed with porous 1 microm bare silica microspheres and immobilized by potassium silicate-formamide in order to obtain columns with silica-based monolithic packing. After curing, the particle-fixed monolithic columns were octadecylated insitu with dimethyloctadecylchlorosilane. The columns were mechanically strong and permeable. No noticeable loss in efficiency was found after using a column continuously for 1 month. The performances of the particle-fixed silica monolithic columns were evaluated for CEC under RP conditions. High separation efficiency (about125 200 plates/m) was obtained by using these new types of columns. |
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| Keywords: | Continuous bed Electrochromatography Immobilization Silica particles |
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