Objective: Study on the electrochemical fingerprints of Fructus chaenomelis from different areas by B-Z oscillation system. Method: With adding F. chaenomelis to chemical oscillation system of H2SO4-CH2(COOH)2-Ce(SO4)2-KBrO3

electrochemical workstation was used to record potential(E) with time(t) changes.The induction phase

oscillating period

amplitude and oscillating life of every fingerprint were recorded and oscillation fingerprint of F. chaenomelis was also obtained. By investigating the factors of reactant concentrations on oscillation curves

the results obtained showed that the optimum conditions were as follows:12 mL of H2SO4(3.0 mol·L-1)

6mL of CH2(COOH)2 (0.4 mol·L-1)

3mL of Ce(SO4)2(0.005 mol·L-1)

3mL of KBrO3(0.2 mol·L-1)

reaction temperature 310 K

added 0.3 g of F. chaenomelis powder. Result: Analyzing these fingerprints

there were significant differences in induction curve

oscillation curve and characteristic parameters of electrochemical fingerprints among F. chaenomelis from different producing areas. Conclusion: This method can be used to identify F. chaenomelis from different habitats and it was convenient

sensitive and credible

and without need sample preparation.