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中文摘要：
提出了基于毛细管电泳芯片的电化学和电化学发光同时检测技术.在此芯片系统中,三联吡啶钌Ru(bpy)2+3[Tris(2,2'-bypiridyl) ruthenium(Ⅱ)]既作为电化学发光(ECL)检测所需的发光试剂与被分析物反应,生成激发态的Ru(bpy)2+3*,从而产生电化学发光信号;又具有催化作用参与电极表面的电化学反应,从而得到增强的电流响应.电化学信号与电化学发光信号同时产生并被分别纪录,从而实现了电化学和电化学发光的同时检测.这种芯片由两部分构成,分别是带有分离和进样通道的聚二甲基硅氧烷(PDMS)层和ITO(Indium tin oxide)工作电极底片.PDMS层与ITO电极底片采用可逆键合的方式组成芯片,该芯片大大简化了操作过程,提高了发光信号的采集效率.在整个实验过程中,ITO电极表现出良好的稳定性,可长时间多次使用.选用山莨菪碱和氧氟沙星两种药物分子作为被分析物,对芯片系统性能进行了表征.
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