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首页> 外文期刊>Journal of Agricultural and Food Chemistry >Determination and differentiation of flos chrysanthemum based on characteristic electrochemical profiles by capillary electrophoresis with electrochemical detection.
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Determination and differentiation of flos chrysanthemum based on characteristic electrochemical profiles by capillary electrophoresis with electrochemical detection.

机译：基于特征电化学曲线的毛细管电泳-电化学检测法测定和鉴定菊花。

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A high-performance capillary electrophoresis with electrochemical detection (CE-ED) method has been developed for the analysis of bioactive ingredients in Flos Chrysanthemum in this work. The effects of several factors such as the acidity and concentration of running buffer, the separation voltage, the applied potential, and the injection time were investigated. Under the optimum conditions, the eight analytes could be well separated within 20 min at the separation voltage of 14 kV in a 50 mmol/L Borax running buffer (pH 9.2). A 300 mum diameter carbon disk electrode has a good response at a potential of +950 mV (vs SCE) for all analytes. Good linear relationship was established over 3 orders of magnitude with detection limits (S/N = 3) that ranged from 1.9 x 10(-)(7) to 3.0 x 10(-)(8) g/mL. This proposed method has been successfully applied for the determination and differentiation of six kinds of popular Flos Chrysanthemum samples based on their characteristic electrochemical profiles, and the results are satisfactory.
机译：在这项工作中，已经开发出一种带有电化学检测的高性能毛细管电泳（CE-ED）方法，用于分析菊花中的生物活性成分。研究了运行缓冲液的酸度和浓度，分离电压，施加的电势和进样时间等几个因素的影响。在最佳条件下，可以在50 mmol / L硼砂运行缓冲液（pH 9.2）中以14 kV的分离电压在20分钟内很好地分离出八种分析物。对于所有分析物，直径为300微米的碳盘电极在+950 mV（相对于SCE）的电势下具有良好的响应。在3个数量级上建立了良好的线性关系，检测限（S / N = 3）在1.9 x 10（-）（7）至3.0 x 10（-）（8）g / mL范围内。该方法基于其特征性的电化学特征，已成功应用于六种流行的菊花样品的测定和鉴别，结果令人满意。

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