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OALib Journal期刊
ISSN: 2333-9721
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碳纳米管复合物电极的构筑及其对嘌呤衍生物的同时测定
, PP. 471-475
Keywords: 单壁碳纳米管,嵌入式超薄碳糊,嘌呤衍生物,伏安法,化学修饰电极
Abstract:
以嵌入式超薄碳糊(IUCP)前驱膜为基体,构建了单壁碳纳米管复合聚天青I修饰电极(SWNTs/AZ/IUCP/CME)。以扫描电镜表征其表面形貌,循环伏安法和微分伏安法考察其在黄嘌呤(XA)和次黄嘌呤(HXA)中的响应情况。实验表明,电极对XA和HXA的电化学反应表现出良好的增敏作用,采用微分伏安法测得XA和HXA的氧化峰电流分别与其浓度在2.0×10-7~1.0×10-4mol/L和4.0×10-7~1.0×10-4mol/L范围内呈良好线性关系,检出限分别为6.0×10-7和2.8×10-8mol/L。此电极制备简单,可用于尿样中XA和HXA的同时电化学测定。
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