Click oligo(ethylene glycol): An excellent orthogonal stationary phase to C18 for two-dimensional reversed-phase/reversed-phase liquid chromatography

被引:42
作者
Liu, Yanming [1 ]
Guo, Zhimou [1 ]
Jin, Yu [1 ]
Xue, Xingya [1 ]
Xu, Qing [1 ]
Zhang, Feifang [1 ]
Liang, Xinmiao [1 ]
机构
[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
关键词
Click OEG stationary phase; oligo(ethylene glycol); orthogonality; RP/RP; two-dimensional liquid chromatography; traditional Chinese medicine;
D O I
10.1016/j.chroma.2008.08.013
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
A novel click oligo(ethylene glycol) (Click OEG) stationary phase was proposed for constructing two-dimensional reversed-phase/reversed-phase liquid chromatography system (2D-RP/RPLC) combined with C18. The new stationary phase was prepared by immobilization of oligo(ethylene glycol) on silica support via click chemistry. And the resulting material was characterized by FT-IR, solid state CP/MAS C-13 NMR and elemental analysis. The investigation on orthogonality between Click OEG and C18 was performed by geometric approach with a set of testsolutes. The orthogonality reached 68.94%, which is much higher than other combinations. An offline 2DLC system consisted of Click OEG and C18 was constructed and applied to the analysis of a kind of traditional Chinese medicine Lignum Dalbergiae Odoriferae. Excellent separation results validated the high orthogonality between the Click OEG and C18 in the practical separation of complex samples. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:153 / 159
页数:7
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