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The Electrochemical Behavior of Poly-3,4-ethyenedioxy-thiophene Modified Electrode and the Electrocatalytic Oxldation of Ascorbic Acid on the Electrode

HOU Shi-Feng; FANG Hui-Qun;CHEN Hong-Yuan(Department of Chemistry,Nanjing University,Nanjing,210093)  
The electrochemical behavior of poly 3, 4-ethylenedioxy-thiophene modified electrode and the electrocatalytic oxidation of ascorbic acid (AH_2) on this electrode were investigated. The oxidation peak potential shifts, negatively by 220 mV. The relationship between the oxidation peak current of ascorbic acid and its concentration in the rang of 1.0× 10 ̄(-1)─1.0×10 ̄(-5) mol/L is linear. The modified electrode can be applied to the determination of ascorbic acid in fruit and other biological samples.
【Fund】: 国家自然科学基金
【CateGory Index】: O657.1
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