高等学校化学学报Issue(2)：252-258,7.DOI:10.7503/cjcu20130801
生物合成纳米金与MWCNTs/L-Cys复合修饰玻碳电极测定左旋多巴
Determination of Levodopa Using Biosynthesed Gold Nanoparticles/Multiwalled Carbon Nanotubes/L-Cysteine Composite Film Modified Glassy Carbon Electrode
摘要
Abstract
Gold nanoparticles were bio-synthesized by the lotus leaf extract. The Au multiwalled carbon nano-tubes( MWCNTs)/L-cysteine( L-Cys) composite material was prepared. The electrochemical behavior of levo-dopa at the modified electrode was studied. In 0.2 mol/L HAc-NaAc(pH=2.6) buffer, levodopa concentra-tion was linear with oxidation peak current in the range of 0.6-40 and 60-120 μmol/L, and the detection limit was 5.2í10-8 mol/L ( S/N=3 ) . The results show that the Au/MWCNTs/L-Cys modified electrode has good stability and high sensitivity. It has a satisfactory result to determine the effective component of real sam-ple with the recovery of standard addition was between 91.2%-102.5%.关键词
生物合成/荷叶/多壁碳纳米管/左旋多巴Key words
Biosynthesis/Lotus leaf/Multi-walled carbon nanotubes/Levodopa分类
化学化工引用本文复制引用
岳伟超,蔡卓,蒋翠文,叶丹妮..生物合成纳米金与MWCNTs/L-Cys复合修饰玻碳电极测定左旋多巴[J].高等学校化学学报,2014,(2):252-258,7.基金项目
广西自然科学基金(批准号:2010GXNSFA013001)资助.@@@@Supported by the Natural Science Foundation of Guangxi Province, China(No.2010GXNSFA013001) （批准号:2010GXNSFA013001）
