食品工业科技2012，Vol.33Issue(18)：70-72,3.
碳纳米管修饰电极差分脉冲伏安法测定微量Pb^2＋
Determination of trace Pb^2＋ by differential pulse voltammetry with carbon nanotube modified electrode
摘要
Abstract
An electrochemical sensor of Pb2＋ was constructed by modifing carbon nanotubes on the glassy carbon electrode.Pb2＋ was accumulated at-1.0V in the form of Pb.And then stripped by differential pulse voltammetry at-0.58V.The carbon nanotubes could significantly enhance the detection signal of Pb2＋.The amount of carbon nanotubes,pH and supporting electrolyte were optimized.Under the optimized experimental conditions,a linear range of 0.005 to 1μg/mL was obtained with the detection limit of 0.005μg/mL.The linear equation was y=16.0911x-0.2284（r=0.9962）.The reliability was investigated with satisfactory recovery from 95.4% to 105.5% for real samples.The reproducibility was investigated with a RSD of 1.69% for six measurements.The developed Pb2＋ sensor based on carbon nanotubes possesses advantages such as simple fabrication,fast response,low detection limit,good anti-interferential ability and reproducibility.关键词
铅/差分脉冲伏安法/碳纳米管/电化学传感Key words
lead/difference pulse voltammetry/carbon nanotube/electrochemical sensor分类
轻工纺织引用本文复制引用
王穗萍,彭任富,刘雷,刘跃进,杨武,冯波..碳纳米管修饰电极差分脉冲伏安法测定微量Pb^2＋[J].食品工业科技,2012,33(18):70-72,3.基金项目
湖南省教育厅一般项目 （）
湘潭大学自科科学基金项目 （）
湘潭大学博士科研启动项目 （）
淀粉与植物蛋白深加工教育部工程研究中心开放课题 （）
