文献类型：期刊文献

英文题名：The development of an evaluation method for capture columns used in two-dimensional liquid chromatography

作者：Cao, Liwei[1,2];Yu, Danhua[1];Wang, Xinliang[1];Ke, Yanxiong[1];Jin, Yu[1];Liang, Xinmiao[1,2]

机构：[1]E China Univ Sci & Technol, Sch Pharm, Minist Educ, Engn Res Ctr Pharmaceut Proc Chem, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

年份：2011

卷号：706

期号：1

起止页码：184

外文期刊名：ANALYTICA CHIMICA ACTA

收录：;EI(收录号：20114114422501);WOS:【SCI-EXPANDED(收录号:WOS:000296755300020)】；

基金：This work was sponsored by National Natural Science Funds for Distinguished Young Scholars (20825518), Important National Science & Technology Specific Projects in the Eleventh Five-year Plan Period (2009ZX09313-003).

语种：英文

外文关键词：Capture column; Evaluation method; Two-dimensional liquid chromatography; Separation materials

摘要：Capture columns are important interface tools for on line two-dimensional liquid chromatography (2D-LC). In this study, a systematic method was developed to evaluate and optimize the capture ability of capture columns by off-line method. First, the parameter Delta t(R) (Delta t(R) = t(2)-t(1)-t(0)-W) was introduced to quantitatively represent the capture ability of the capture column by connecting a capture column behind the first dimensional column. Based on the value of Delta t(R), an appropriate capture column was selected after the first dimensional column was fixed. Then, the capture ability of the selected column was promoted by adjusting the mobile phase of the first dimensional column. Capture ability was also optimized using complex sample analysis software system (CSASS) software. Second, the elution mode of the trapped compounds on the capture column was investigated by connecting the capture column before the second dimensional column. More specifically, in mode I. capture column was connected to the second dimension without changing the flow rate direction and the trapped compounds must pass through the capture column and be eluted into the second dimensional column. The contrary connection mode was mode II. It was found that mode I is more suitable method for 2D-LC. Finally, an off-line reversed-phase/hydrophilic interaction liquid chromatography two-dimensional liquid chromatography (RP/HILIC 2D-LC) system with a C18 capture column was developed to demonstrate the practical application of this method. (C) 2011 Elsevier B.V. All rights reserved.