title: Preparation of particle-fixed silica monoliths used in capillary electrochromatography.
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.
authors.affiliation: Jiangsu Key Laboratory of Environmental Materials and Environmental Engineering, College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, China. quqishu@gmail.com
authors.forename: Qishu
authors.initials: Q
authors.lastname: Qu
authors.forename: Xiaoqing
authors.initials: X
authors.lastname: Tang
authors.forename: Chengyin
authors.initials: C
authors.lastname: Wang
authors.forename: Gongjun
authors.initials: G
authors.lastname: Yang
authors.forename: Xiaoya
authors.initials: X
authors.lastname: Hu
authors.forename: Xiao
authors.initials: X
authors.lastname: Lu
authors.forename: Yin
authors.initials: Y
authors.lastname: Liu
authors.forename: Chao
authors.initials: C
authors.lastname: Yan