頁籤選單縮合
題 名 | Photoinduced Polymerization for Entrapping of Octadecylsilane Microsphere for Capillary Liquid Chromatography |
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作 者 | 張裕平; 鄧璞紅; 許明彔; 魏新軍; 湯波; | 書刊名 | Journal of the Chinese Chemical Society |
卷 期 | 56:4 2009.08[民98.08] |
頁 次 | 頁804-811 |
分類號 | 341 |
關鍵詞 | Fritless column; Photopolymerization; Capillary liquid chromatography; Slurry packing; |
語 文 | 英文(English) |
英文摘要 | A short length of a sol-gel monolith was initially prepared as the temporary frit in a 100 μm inner diameter fused-silica capillary by an in situ photopolymerization. The packed 4 μm octadecylsilane particles were then immobilized within the identical sol-gel solution through the same photopolymerization process. The prepared fritless capillary column was examined for the chromatographic performance by the self-developed capillary liquid chromatography system. Baseline separation of themodel analytes was achieved including thiourea, benzene, toluene and ethylbenzene with the lowest theoretical plate height about 66 μm for the retained component. A scanning electron micrograph was used to characterize the temporary frit and entrapped microspheres. The inorganic polymer matrix in the microsphere-packed column functioned to link microspheres at specific sphere-sphere and sphere-capillary contact points. Furthermore, the stability and porosity of the fritless column were systematically investigated by a simple flow method. |
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