Study on the non-enzymatic electrochemical glucose quantitative detection method in Na2S2O3 neutral solution environment

ABSTRACTIn order to find a green and safe solution as the base solution for the quantitative detection of glucose, the neutral solution Na2S2O3 was selected as the base solution. A three-electrode electrochemical system was designed. In this system, the working electrode was copper sheet, the counter electrode was platinum electrode, and the reference electrode was saturated KCl calomel solution electrode. Cyclic voltammetry (CV) and chronoamperometry(i-t) methods were used for the experiment. CV scanning results showed that glucose could produce the oxidation-reduction reaction on the surface of the copper electrode, and the parameters of i-t were adjusted. According to the results of i-t scanning, the quantitative detection model of glucose was established. The model was [Formula: see text]. The regression parameter R2 was 0.99672. Glucose was tested with different base solutions. Results showed that Na2S2O3 solution was a good base solution. The i-t control experiments showed that the proposed method were effective in Na2S2O3 solution.