Effects of different mobile phases on immobilized carbowax 20M stationary phase in capillary liquid chromatography

1992 ◽  
Vol 4 (4) ◽  
pp. 305-312 ◽  
Author(s):  
Marie Horká ◽  
Miloš Krejčí ◽  
Vladislav Kahle
Keyword(s):  
Liquid Chromatography ◽  
Stationary Phase ◽  
Capillary Liquid Chromatography ◽  
Mobile Phases ◽  
Capillary Liquid

Phosphatidylcholine covalently linked to a methacrylate-based monolith as a biomimetic stationary phase for capillary liquid chromatography

2015 ◽  
Vol 1402 ◽  
pp. 27-35 ◽  
Author(s):  
Dana Moravcová ◽  
Enrique Javier Carrasco-Correa ◽  
Josef Planeta ◽  
Michael Lämmerhofer ◽  
Susanne K. Wiedmer
Keyword(s):  
Liquid Chromatography ◽  
Stationary Phase ◽  
Capillary Liquid Chromatography ◽  
Covalently Linked ◽  
Capillary Liquid

scholarly journals Separation of Inorganic Anions and Phenolic Compounds Using Tetraethylene Oxide-Bonded Stationary Phases in Capillary Liquid Chromatography

2019 ◽  
Vol 19 (1) ◽  
pp. 191
Author(s):  
Roza Linda ◽  
Mohamad Rafi ◽  
Lee Wah Lim ◽  
Toyohide Takeuchi
Keyword(s):  
Liquid Chromatography ◽  
Phenolic Compounds ◽  
Stationary Phase ◽  
Stationary Phases ◽  
Capillary Liquid Chromatography ◽  
Inorganic Anions ◽  
Tetraethylene Glycol ◽  
Modified Silica ◽  
Relative Standard ◽  
Capillary Liquid

Tetraethylene glycol monomethyl ether (TEGMM) and tetraethylene glycol (TEG) modified silica were synthesized and used in capillary liquid chromatography as stationary phases. The stationary phases were prepared by chemically bonding TEGMM or TEG on silica via reaction with 3-glycidyloxypropyltrimethoxysilane. The present stationary phases were successfully used for the separation of several inorganic anions and phenolic compounds. The TEG-modified silica stationary phase had a better selectivity and higher retention for five anions compared to TEGMM-modified silica stationary phase. The repeatability of retention time for the five anions was satisfactory on both stationary phases. By using 2 mM sodium chloride as eluent, the relative standard deviation values were in ranging from 0.68–3.21 and 2.00–2.16% for analytes in the TEG-and TEGMM-bonded stationary phase, respectively. It was found that the TEG-bonded stationary phase had hydrophilic properties due to the presence of the hydroxyl group at the end of the TEG chains.

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