New microsystem of capillary electrophoresis with amperometric detection
Data(s) |
2001
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Resumo |
We have made a cheap microsystem of capillary electrophoresis with a new method, integrating the electrodes, injection channel, separation channel, buffer reservoirs and detection cell on a polymethylmethacrylate (PMMA) chip. Using an integrated micro carbon fiber disk electrode as the working electrode in three electrodes system, 1 x 10(-4) mol/L dopamine(DA) could be detected with end-column amperometric detection. The reproducibility was good. Peak current was 6.73 nA,theoretical plate number was 71300/m and height equivalent of one theoretical plate height was 14.0 mum for 1 x 10(-4) mol/L DA. The limit of detection was 3.6 x 10(-8) mol/L and the linear range was extended from 5 x 10(-7) mol/L to 1 x 10(-4) mol/L for DA. 1 x 10(-4) mol/L catechol (CA) and 5 x 10(-5) mol/L DA were also separated completely with R-s = 10.1. |
Identificador | |
Idioma(s) |
中文 |
Fonte |
Wu YY;Wu MJ.New microsystem of capillary electrophoresis with amperometric detection,CHINESE JOURNAL OF ANALYTICAL CHEMISTRY,2001,29(2):138-141 |
Palavras-Chave | #CHIPS |
Tipo |
期刊论文 |