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Electrochemical detector based on sol‐gel‐derived carbon composite material for capillary electrophoresis microchips
Author(s) -
Sun Xiuhua,
Yan Jilin,
Yang Xiurong,
Wang Erkang
Publication year - 2004
Publication title -
electrophoresis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.666
H-Index - 158
eISSN - 1522-2683
pISSN - 0173-0835
DOI - 10.1002/elps.200305967
Subject(s) - detector , electrode , materials science , fabrication , carbon fibers , capillary electrophoresis , composite number , electrochemistry , capillary action , nanotechnology , optoelectronics , analytical chemistry (journal) , chromatography , optics , composite material , chemistry , physics , medicine , alternative medicine , pathology
An on‐chip disk electrode based on sol‐gel‐derived carbon composite material could be easily and reproducibly fabricated. Unlike other carbon‐based electrodes reported previously, this detector is rigid, convenient to fabricate, and amenable to chemical modifications. Based on the stable and reproducible characters of this detector, a copper particle‐modified detector was developed for the detection of carbohydrates which extends the application of the carbon‐based electrode. In our experiments, the performance of the new integrated detector for rapid on‐chip measurement of epinephrine and glucose was illustrated. Experimental procedures including the fabrication of this detector, the configuration of separation channel outlet and electrode verge, and the performance characteristics of this new electrochemical detector were investigated.