纳米金/单壁碳管修饰玻碳电极对黄芩苷的电催化作用及快速检测  

Electrocatalysis and determination of baicalin at a nano-Au/single-wall carbonnanotube modified electrode

作　　者：吉玉兰[1,2] 王广凤[1] 方宾[1] 

机构地区：[1]安徽师范大学化学与材料科学学院,芜湖241000 [2]安徽中医药高等专科学校药学系,芜湖241000

出　　处：《分析试验室》2010年第6期11-14,共4页Chinese Journal of Analysis Laboratory

基　　金：国家自然科学基金(20675001);安徽省教育厅自然科学基金(KJ2009B013Z)项目资助

摘　　要：用循环伏安法(CV)在单壁碳纳米管表面直接沉积金纳米粒子,制备了纳米金/单壁碳纳米管修饰玻碳电极(NG/SWNT/GCE),并用扫描电镜(SEM)进行表征。研究了黄芩苷在该修饰电极上的电化学行为,结果表明该修饰电极对黄芩苷具有电催化作用。用示差脉冲伏安法(DPV)对黄芩苷进行测定,其氧化峰电流与黄芩苷浓度在2.0×10-8～7.0×10-6mol/L范围内呈线性关系。检出限为5.0×10-9mol/L(S/N=3)。该修饰电极实测了中药黄芩粉中黄芩苷的含量,回收率在96.8%～102.5%。Gold nanoparticles (GNPs) were directly deposited onto the surface of a single-wall carbon nanotube modified electrode through cyclic voltammetric method.The GNPs/SWNT modified electrode was characterized by means of scanning electron microscopy (SEM).The electrochemical behavior of baicalin at the modified electrode was investigated.The results indicate that NG/SWNT/GCE has electrocatalytic effect on baicalin.The linear dependence of oxidation current on baicalin concentration in the range of 2.0×10-8～7×10...

关 键 词：黄芩苷 纳米金 单壁碳纳米管 修饰电极 电催化 

分 类 号：R284[医药卫生—中药学]