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首页> 外文期刊>Chinese science bulletin >Utilization of a platinum-modified carbon fiber electrode in capillary electrophoresis with amperometric detection
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Utilization of a platinum-modified carbon fiber electrode in capillary electrophoresis with amperometric detection

机译：铂修饰的碳纤维电极在毛细管电泳与安培检测中的应用

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摘要

High performance capillary electrophoresis (HPCE) is a powerful tool for separation of complex compounds. Capillary electrophoresis with amperometric detection is a prospective research area in HPCE and has attracted wide attention because of its highsensitivity, small dead volume and inexpensive equipment. Only a few reports on the use of chemically modified electrode (CME) in capillary electrophoresis have been published. In this note a novel modified electrode dispersed with ultrafine platinum particles on the surface of a 30 μm carbon fibre microelectrode was investigated in capillary electrophoresis electrochemistry. Hydrazine is not an easily oxidizable compound, exhibiting a large overpotential towards electrooxidation at ordinary solid electrode, so it is difficult to determine it by amperometric detection. Our Pt particle-modified electrode offers good catalytical activity for hydrazine as well as excellent stability.
机译：高性能毛细管电泳（HPCE）是分离复杂化合物的强大工具。毛细管电泳与安培检测是HPCE的一个前瞻性研究领域，由于其高灵敏度，死体积小和设备便宜而受到广泛关注。关于毛细管电泳中使用化学修饰电极（CME）的报道很少。在本说明中，通过毛细管电泳电化学研究了一种在30μm碳纤维微电极表面上分散有超细铂颗粒的新型修饰电极。肼不是一种易于氧化的化合物，在普通的固体电极上对电氧化表现出很大的过电势，因此很难通过安培检测确定它。我们的Pt颗粒修饰电极对肼具有良好的催化活性，并具有出色的稳定性。

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