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采用H~+—Mn~(2+)—CH_3COCH_3—BrO_3~-振荡体系,研究不同种类茶叶的电化学指纹图谱.系统考察温度、转速、硫酸锰浓度、溴酸钾浓度、氢离子浓度和茶叶用量等因素对茶叶电化学指纹图谱的影响.结果表明:测定最佳条件为溶液总体积100 mL,温度37℃,转速600r/min,硫酸锰浓度0.007 0mol/L,溴酸钾浓度0.068 0mol/L,氢离子浓度1.500 0mol/L,茶叶用量0.800 0g.不同产地和品种的茶叶电化学指纹图谱主要特征参数存在显著差异,可用于茶叶产地和品种的判定.
The electrochemistry fingerprints of different kinds of tea were studied by H ~ + -Mn ~ (2 +) - CH_3COCH_3-BrO_3 ~ - oscillation system.The temperature, speed, manganese sulfate concentration, potassium bromate concentration, hydrogen ion concentration and the amount of tea were systematically investigated The results showed that the optimum conditions for the determination of the total amount of the solution were 100 mL, 37 ℃, 600r / min, manganese sulfate concentration 0.007 0mol / L, potassium bromate concentration 0.068 0mol / L, hydrogen ion The concentration of 1.500 0mol / L, the amount of tea 0.800 0g.Different producing areas and varieties of tea electrochemical fingerprint of the main characteristic parameters are significantly different, can be used for tea origin and varieties of judgment.