多壁碳纳米管-聚茜素红膜修饰电极测定鸟嘌呤  

The Determination of Guanine on Alizarin Multi-Walled Carbon Nanotubes Modified Electrode

作　　者：刘端[1] 李将渊[1] 

机构地区：[1]化学合成与污染控制四川省重点实验室西华师范大学化学化工学院,四川南充637009

出　　处：《西华师范大学学报（自然科学版）》2011年第4期344-347,384,共5页Journal of China West Normal University(Natural Sciences)

基　　金：四川省南充市科学技术局重点科研项目(N2008-SF003)

摘　　要：用循环伏安法制备了多壁碳纳米管-聚茜素红修饰电极.用循环伏安法和线性扫描伏安法研究了鸟嘌呤在多壁碳纳米管-聚茜素红修饰电极上的电化学行为.结果表明:鸟嘌呤在修饰电极上是不可逆氧化过程,其氧化峰电流与浓度在5×10-6-3×10-4mol/L范围内有良好的线性关系:Ip(A)=-1.09×10-9-1.33×10-4c(mol/L),R=0.9983,其检出限为5×10-6mol/L,样品回收率为:97.44%-104.8%.The electrode was modified by multi- walled carbon nanotubes -poly alizarin. And electrochemical be havior of Guanine on modified electrode was studied with cyclic voltammetry and linear sweep voltammetry. The was diseovered result indicated that an irreversible oxidation process appeared on modified electrode. Good linearity of Guanine when concentration was in 5 × 10^-6 -3 × 10^-4mol/L, Ip（A） = - 1.09 × 10^-9 - 1.33 × 10^-4c（mol/L） , relative coefficient R = 0. 9983, and detection limit was 5 × 10^-6mol/L. The recovery was 97.44% - 104.8%.

关 键 词：多壁碳纳米管 茜素红 修饰电极 鸟嘌呤 

分 类 号：O657.1[理学—分析化学]