【摘要】 目的:通过B-Z振荡反应用电化学指纹图谱对中药木瓜进行鉴别。方法:将木瓜加入H2SO4-CH2(COOH)2-Ce(SO4)2-KBrO3中,组成B-Z化学振荡体系,用电化学工作站记录数据,并对木瓜用量等反应条件进行了考察,确定体系的最佳实验条件为12 mL 3.0 mol.L-1H2SO4溶液、6 mL 0.4 mol.L-1CH2(COOH)2溶液、3 mL 0.005 mol.L-1 Ce(SO4)2和3 mL 0.2mol.L-1KBrO3溶液,温度310 K,加入0.3 g的木瓜粉末。结果:通过对不同产地木瓜化学指纹图谱的研究,发现不同产地木瓜的指纹图谱主要参数有较大区别。结论:该方法简便,准确,可靠,可方便的用于不同产地木瓜的鉴别。更多还原

【Abstract】 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 H2SO4CH2(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.更多还原