Abstract: Poly(γ-aminobutyric acid) modified electrode (P-γ-ABA/GCE) is prepared through electro-polymerization of γ-aminobutyric acid on the surface of glassy carbon electrode (GCE).The electrochemical behavior of paeonol on P-γ-ABA/GCE is studied,and a new method for the determination of paeonol is established.The results show that good linear relationships between current intensity and paeonol concentrations are obtained in the ranges of 2.0×10-7-8.0×10-5 mol·L-1 under a Na2HPO4-NaH2PO4 buffer solution with a pH value of 7.0,the correlation coefficient is 0.992 7,and the detection limit is 8.0×10-8 mol·L-1.The modified electrode can be applied to detect paeonol with recoveries of 96.3%-103.7%.It is identified that this determination method can be used for the determination of actual samples.
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