Analysis of low molecular weight organic acids in water with capillary zone electrophoresis employing indirect photometric detection

被引:39
作者
Dahlén, J [1 ]
Hagberg, J
Karlsson, S
机构
[1] Linkoping Univ, Dept Water & Environm Studies, S-58183 Linkoping, Sweden
[2] Univ Orebro, Man Technol Environm Res Ctr, S-70182 Orebro, Sweden
来源
FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 2000年 / 366卷 / 05期
关键词
D O I
10.1007/s002160050098
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A capillary zone electrophoretic method for the analysis of low molecular weight carboxylic acids in water was developed. The application uses the chromophore trimellitic acid that allows for indirect photometric detection at 254 nm. Selectivity control by the addition of Ca2+ to the carrier electrolyte made possible a baseline resolved separation of 14 carboxylic acids. Good linearity and repeatability were obtained for both electrokinetic and hydrostatic injection modes. The usefulness of the method is demonstrated by the analysis of a snow sample.
引用
收藏
页码:488 / 493
页数:6
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