酵母核糖核酸在碳纳米管修饰电极上的电化学行为及其分析测定  

Study on the Electrochemical Behaviors of Ribonucleic Acid Yeast at Multi-wall Carbon Nanotubes Film Modified Electrode

作　　者：艾珍[1] 廖钫[1] 朱林[1] 何晓英[1] 蔡铎昌[1] 

机构地区：[1]西华师范大学化学化工学院,四川南充637002

出　　处：《分析测试学报》2005年第5期56-58,61,共4页Journal of Instrumental Analysis

基　　金：四川省教育厅重点研究课题项目(2004A106)

摘　　要：研究了酵母核糖核酸(yRNA)在碳纳米管(MWNT)修饰电极上的电化学行为,优化了测定参数,在此基础上建立了一种直接测定yRNA的电分析测试方法.yRNA在碳纳米管修饰电极上于磷酸盐缓冲溶液中在0.758 V处产生不可逆的氧化电流峰,峰电流与yRNA的质量浓度在1～10mg/mL之间有良好的线性关系,线性回归方程为:Ip=0.081 3 ρ+0.1807,相关系数r为0.998 0,检出限为0.6mg/mL.The electrochemical behavior of ribonucleic acid yeast （yRNA） at multi- carbon nanotube （MWNT） modified glassy carbon electrode （GCE） was investigated. The experimental parameters were optimized, and a direct electroanalytical method for determining yRNA was developed, The oxidation peak current of yRNA at the MWNT-modified GCE increased significantly in comparison with that at the bare GCE. The peak current was proportional to the concentration of yRNA on the range of 1 - 10 mg/mL with the detection limit of 0.6 mg/mL.

关 键 词：酵母核糖核酸 碳纳米管 修饰电极 电化学分析 

分 类 号：O657.1[理学—分析化学] Q55[理学—化学]