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A Strong Cation-Exchange Monolithic Column for Capillary Liquid Chromatography

Author: JiangChengCheng
Tutor: LiJinXiang
School: Liaoning Normal University
Course: Analytical Chemistry
Keywords: Cation Ion exchange chromatography Monolithic column
CLC: O657.75
Type: Master's thesis
Year: 2011
Downloads: 18
Quote: 0
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Abstract


The polymeric material has a typical stability of high mechanical strength , and applicable to a wide range of pH values ??and many other features , and thus be used in the application of ion exchange chromatography is very advantage . There are generally two methods of polymer monolith synthesized with ion-exchange functional groups . One is the direct copolymerization of the introduction of the ion-exchange functional groups ; the second different after chemical modification of the surface of the column as a whole . Second method not only the step is complicated and time-consuming , prepared in poor reproducibility , low exchange capacity of the column , and the subsequent chemical modification process also adversely affect the life of the column as a whole . In this study the potassium salt of 3 - sulfonic acid - propyl methacrylate as a monomer , the acrylate esters of ethylene glycol dimethacrylate as the crosslinking agent , n-propanol , 1,4 - butanediol and water for three yuan porogen , in situ polymerization of a strong cation exchange monolithic column to determine the best preparation conditions of the column ; the monolithic column chromatographic performance obtained by the separation of the mixture was evaluated common inorganic cation , the results showed that the direct copolymerization ratio after the chemically modified prepared by ion exchange monolithic column with higher separation performance ; amines phase pH and its composition of chromatographic retention behavior , confirmed by examining the flow in the column retention mechanism for ion exchange and hydrophobic interaction together ; investigated the monolithic column retention mechanism of proteins and amino acids ; measured using the whole column phenylenediamine content in seawater cation content , and hair dye , linear range , precision , detection limit and the recovery rate of this detection method were evaluated.

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CLC: > Mathematical sciences and chemical > Chemistry > Analytical Chemistry > Instrument analysis ( physics and physical chemistry ) > Chromatographic analysis > Ion exchange chromatography
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