Fast preparation of photopolymerized monolithic columns for capillary electrochromatography  

作　　者：龚文君 许光日 张毅军 张裕平 CHOI Seong-ho LEE Kwang-pill 

机构地区：[1]Henan Institute of Science and Technology [2]Department of Chemistry,Hannam University,Daejon,South Korea [3]Department of Chemistry,Graduate School,Kyungpook National University,Daegu702-701,South Korea

出　　处：《Journal of Central South University of Technology》2008年第2期176-182,共7页中南工业大学学报（英文版）

基　　金：Project(20611140646) supported by the NSFC-KOSEF Scientific Cooperation Program; project(2006HANCET-01) supported by Program for New Century Talents of University of Henan Province;project(2005-461-140) supported by Program for Backbone Teacher in Henan Province

摘　　要：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 μm 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.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 μm 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.

关 键 词：ELECTROCHROMATOGRAPHY monolithic columns photopolymerized sol-gel aromatic hydrocarbons 

分 类 号：TN16[电子电信—物理电子学]