The electrochemical fingerprints of Radix Paeoniae Alba were studied by chemical oscillation system of H+-Mn2+-CH3COCH3-BrO3－. Influences of variety of Radix Paeoniae Alba for the chemical oscillation system were studied. Finally, 43 ℃ temperature, 500 rpm stirring rate, 1000 mg Radix Paeoniae Alba, 2.0 mol•L- 1 hydrogen ion concentration, 0.084 g MnSO4, 0.835 g KBrO3, 1mL acetone and 100 mL total volume were chosen as the optimal experimental conditions. The results indicated that the electrochemical fingerprints of Radix Paeoniae Alba from different regions showed significantly different characteristics, so the electrochemical fingerprint is a efficacious method to identify the regions and variety of Radix Paeoniae Alba.
Jian Zhong Jin and Chao Shen
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