Abstract
In this paper, a three-electrode electrochemical detection system was designed. Platinum electrode was used as the counter electrode, saturated KCl electrode as reference electrode, and copper film material as working electrode, respectively. Cyclic voltammetry (CV) and chronoamperometry (i-t) methods were used for d-psicose scanning. CV results indicated that d-psicose presented the oxidation–reduction reacting procedure on the surface of copper film electrode. Testing parameters optimization was conducted using CV scanning in different scanning rates. d-psicose quantitative determination model was developed by i-t scanning results. The sensitivity was9419.1A×cm-2·mol/L, the detection limit was1.04311×10-8mol/L. The proposed method has some advantages including high sensitivity, low detection line, and fast response speed. Negative control testing results by using glucose, sucrose, and NaCl solutions demonstrated that the proposed method had good selectivity.
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