Determination of Hyperoside Based on a Electrochemical Sensor Assembled with Carbon Nanotubes

Objective:A simple and highly sensitive electrochemical sensor for hyperoside was developed based on a glassy carbon electrode (GCE) modified with carboxylic group-functionalized single-walled carbon nanotubes (SWCNTs) and the electrochemical behavior of hyperoside on the surface of the sensor was studied. Methods:The electrochemical behavior of hyperoside on the surface of the sensor was investigated by cyclic voltammetry (CV). Results:The oxidation peak current and reduction peak current of hyperoside on modified electrode greatly increased compared with bare GCE. Under the optimum conditions:pH of buffer solution was 6.0,the amount of carbon nanotubes was 10 μL and the detection potential was 0.34 V,the oxidation current was linear over a range from 3.0×10^-9 to 1.0×10^-7 mol/L with a detection limit of 2.41×10^-9 mol/L. Conclusion:The sensor had high sensitivity,good reproducibility and stability,and could be used for the detection of hyperoside.