Capillary liquid chromatography and capillary electrochromatography using silica hydride stationary phases.
Capillary liquid chromatography and capillary electrochromatography using silica hydride stationary phases.
复制标题
使用二氧化硅固定相的毛细管液相色谱和毛细管电色谱。
DOI：
10.1016/j.chroma.2008.02.006
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Sukul,Dipti
中科院分区：
文献类型：
--
作者：
Pesek,JosephJ;Matyska,MariaT;Sukul,Dipti
在毛细管LC和加压毛细管电色谱（pCEC）模式下，对4.0和1.8μm硅胶颗粒上的十八烷基十八烷基固定相进行了检测。将这两种材料与有机硅烷化制备的标准C18固定相和填充在常规4.6mm内径中的氢化物材料进行了比较。柱毛细管柱的性能进行了评估，在分析时间为各种混合物以及效率。特别令人感兴趣的是LC模式之间的差异，其中只有层流存在和pCEC操作，其中一个平面的电驱动的流动剖面叠加在抛物线加压流。还评价了用4.0和1.8μm颗粒二氧化硅填充的柱之间的性能差异。
A hydride-based octadecyl stationary phase on both 4.0 and 1.8μm silica particles is tested in both the capillary LC and the pressurized capillary electrochromatography (pCEC) modes. These two materials are compared to standard C18 stationary phase made by organosilanization and to the hydride material packed into a convention 4.6mm I.D. column. The performance of the capillary columns is evaluated in terms of analysis times for various mixtures as well as efficiency. Of particular interest are the differences between the LC mode where only laminar flow is present and pCEC operation where a flat electrodriven flow profile is superimposed on the parabolic pressurized flow. Differences in performance between columns packed with 4.0 and 1.8μm particle silica are also evaluated.