期刊
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
卷 386, 期 3, 页码 566-571出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00216-006-0425-2
关键词
monolithic column; hexyl methacrylate; reversed-phase liquid chromatography; proteins
Hexyl methacrylate (HMA)-based monolithic semi-micro columns were prepared by in situ polymerization within the confines of 1.02-mm-i.d. silicosteel tubing for reversed-phase and/or precipitation-redissolution liquid chromatography. Practically useful monolithic columns with adequate separation efficiency, high permeability, and good mechanical strength were successfully obtained using a polymerization mixture comprising 24% hexyl methacrylate (HMA), 6% ethylene dimethacrylate (EDMA), 44.5% 1-propanol, and 25.5% 1,4-butanediol. The column performance was evaluated through the separations of a series of alkylbenzenes. At a normal flow rate of 50 mu L min (-1), the produced HMA-based monolithic columns typically exhibited 3,000 theoretical plates for a 20-cm-long column, and the pressure drop was generally less than 1 MPa per 20 cm. The monolithic columns were resistant to at least 15 MPa, and could be properly operated at 15-20 times higher flow rate than normal, reducing the separation time to 1/15-1/20. The HMA-based monolithic columns were applied to rapid and efficient separations of proteins such as ribonuclease A, cytochrome c, transferrin, and ovalbumin in the precipitation-redissolution mode. Using a CH3CN gradient elution at a flow rate of 1,000 mu L min(-1), four proteins were baseline separated within 20 s.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据