自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 15    No. 2    April 2008

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Fast preparation of photopolymerized monolithic columns for capillary electrochromatography
GONG Wen-jun(龚文君)1, XU Guang-ri(许光日)1, ZHANG Yi-jun(张毅军)1,ZHANG Yu-ping(张裕平)1, CHOI Seong-ho2, LEE Kwang-pill3

1. Henan Institute of Science and Technology, Xinxiang 453003, China;2. Department of Chemistry, Hannam University, Daejon, South Korea;3. Department of Chemistry, Graduate School, Kyungpook National University, Daegu702-701, South Korea

Abstract:Photopolymerized sol-gel(PSG) columns were prepared using methacryloxypropyltrimethoxysilane as the monomer, toluene as the porogen and hydrochloric acid as the catalyst. Four different photoinitiators such as benzoin methyl ether, Irgacure 819, Irgacure 1700 and Irgacure 1800 were comparatively used in the reaction solution in the presence and absence of sodium dodecyl sulfate. The above eight solutions were respectively irradiated at 365 nm for 5−10 min in each capillary (75 m inside diameter) to prepare the porous monolithic sol-gel column by a one-step, in situ, process. The chromatographic behavior of the eight PSG columns were comparatively studied, all of which exhibit reversed-phase character. Using these columns, several neutral compounds, namely thiourea, benzene, toluene, ethyl benzene, biphenyl and naphthalene can be separated from mixtures with a largest column efficiency of 74 470 plate/column for thiourea. Addition of sodium dodecyl sulfate in the polymerization process has a significant influence on the morphology and migration time.

 

Key words: electrochromatography; monolithic columns; photopolymerized sol-gel; aromatic hydrocarbons

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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