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Citation: ZHANG Kai, ZHI Mingyu, HE Yi, ZHU Yan, ZENG Xiuqiong, SHOU Dan. Preparation of difunctional polymer-based cation exchangers and their application in ion chromatography[J]. Chinese Journal of Chromatography, ;2020, 38(4): 445-451. doi: 10.3724/SP.J.1123.2019.07023 shu

Preparation of difunctional polymer-based cation exchangers and their application in ion chromatography

ZHANG Kai ^1,, ,
ZHI Mingyu ² ,
HE Yi ² ,
ZHU Yan ^3,, ,
ZENG Xiuqiong ³ ,
SHOU Dan ⁴

1.
College of Science&Technology, Ningbo University, Ningbo 315212, China;
2.
Hangzhou Vocational and Technical College, Hangzhou 310018, China;
3.
Department of Chemistry, Zhejiang University, Hangzhou 310028, China;
4.
Zhejiang Academy of Traditional Chinese Medicine, Hangzhou 310007, China

Corresponding author: ZHANG Kai, ZHU Yan,
Received Date: 24 July 2019

Fund Project: Zhejiang Provincial Natural Science Foundation of China (Nos. LY18C200001, YB19B050002)

Ion chromatography (IC) is one of the most important means for the separation and analysis of cationic compounds. Research on high-performance cation exchangers is of great significance for the advancement of modern IC techniques. Herein we proposed a newly developed modification method for polymer-based particles, based on thiol-radical-mediated polymerization. Specifically, acrylic acid and maleic anhydride were used as monomers and sodium 2-mercaptoethanesulfonate was used as the thiol modifier to prepare novel difunctional cation exchangers, functionalized with both carboxylic and sulfonic groups. With simple strong acid eluents, typical cations were well separated with good resolution. The retention behaviors of metal cations and organic amines on the cation exchangers were investigated using multiple chromatographic models. The good performances of the cation exchangers were also demonstrated by the gradient separation of ten cations within 24 min. The new method was easy to perform with high efficiency. Additionally, the cation exchange capacities of the cation exchangers were easily modulated by adjusting the initial content of the thiol modifier.
- thiol-ene,
- polymer-based,
- cation exchanger,
- stationary phase,
- ion chromatography(IC)
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