电化学2012，Vol.18Issue(1)：79-83,5.
柠檬酸修饰电极对抗坏血酸、多巴胺和尿酸的同时检测
Simultaneous Determination of Ascorbic Acid, Dopamine and Uric Acid at CA/GC Electrode
摘要
Abstract
The citric acid-modified glassy carbon electrode （CA/GC） was constructed by potentiostatic technique and used for simultaneous determination of ascorbic acid （AA）, dopamine （DA） and uric acid （UA） by cyclic voltammetry （CV） and differential pulse voltammetry （DPV）. The CA/GC electrode exhibits excellent electrocatalytic activity towards AA, DA and UA. The oxidation peaks are well separated with the potential differences between AA and DA, DA and UA, and AA and UA being 170,130 and 300 mV, respectively, which is large enough to determine AA, DA and UA simultaneously. The catalytic peak currents obtained were linearly de- pendent on the concentrations of AA, DA and UA in the range of 2.0×10-6～1.5×10-3mol.L-1,6.0×10-7～1.0×10-3mol.L-1 , and 6.0×10-7～1.0×10-3mol.L-1 , respectively. The proposed sensor shows good reproducibility and may be applied practically in the determination of AA, DA and UA in real samples.关键词
抗坏血酸/多巴胺/尿酸/柠檬酸/修饰电极Key words
ascorbic acid/dopamine/uric acid/citric acid/modified electrode分类
化学化工引用本文复制引用
张英,任旺,李敏娇..柠檬酸修饰电极对抗坏血酸、多巴胺和尿酸的同时检测[J].电化学,2012,18(1):79-83,5.基金项目
四川省教育厅基金项目（No.10ZB102）和四川理工学院科技项目（No.2009xjkyL001）资助 （）
