Capillary electrophoresis applied to kinetic studies of photocatalytic oxidation of substituted anilines

被引：14

作者：

Hilmi, A ^{[1
]}

Luong, JHT ^{[1
]}

Nguyen, AL ^{[1
]}

机构：

[1] Natl Res Council Canada, Biotechnol Res Inst, Montreal, PQ H4P 2R2, Canada

来源：

CHEMOSPHERE | 1998年 / 36卷 / 15期

关键词：

D O I：

10.1016/S0045-6535(98)00016-2

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Cyclodextrin modified capillary electrophoresis (CMCE) and micellar electrokinetic chromatography (MEKC) were tested for their ability to analyze mixtures containing substituted anilines. CMCE separated analytes by their partitioning preference between the two substituted cyclodextrins while MEKC exploited the analyte partitioning between the micelles and the bulk aqueous phase. MEKC was selected to analyze samples that were subjected to photocatalytic oxidation using TiO2 and/or SnO2 as the semiconductor catalyst. The rate constant for each compound was determined when it was degraded individually or in the presence of other derivatives in the same family, indicating a significant degree of analyte competition and synergism offered by the mixed catalyst. The results demonstrated that CE, with its minimal sample preparation and requirement, is a valuable tool, particularly suitable for studying highly toxic pollutants, without generating a high volume of waste. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：3137 / 3147

页数：11

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