Comparison of different conductivity detector geometries on an isotachophoresis PMMA-microchip

被引：27
作者：
Grass, B
Siepe, D
Neyer, A
Hergenröder, R
机构：
[1] Inst Spektrochem & Angew Spektroskopie, D-44013 Dortmund, Germany
[2] Univ Dortmund, D-44221 Dortmund, Germany
来源：
FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 2001年 / 371卷 / 02期
关键词：
D O I：
10.1007/s002160100965
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Conductivity detection is one of the most often employed means of detection in isotachophoresis. In microanalytical devices, thin-film platinum electrodes can be used for conductivity detection and for other electrochemical methods of detection. The design and the performance of different electrode geometries for on-column contact conductivity detection with thin-film platinum electrodes integrated on an isotachophoresis PMMA-microchip is described. Three different electrode geometries for direct conductivity detection were used for the investigation of isotachophoretic separations. The influence of the width of the electrodes and their positioning relative to the separation channel was investigated. The performance of the different detectors is compared for the analysis of organic carboxylic acid anions.
引用
收藏
页码：228 / 233
页数：6
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