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首页> 外文期刊>Electroanalysis >Hemin modified carbon fat electrode for analyzing antimalarial endoperoxide artemisinin in Artemisia annua
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Hemin modified carbon fat electrode for analyzing antimalarial endoperoxide artemisinin in Artemisia annua

机译：血红素修饰的碳脂电极用于分析青蒿中抗疟内过氧化物青蒿素

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摘要

A hemin bulk modified carbon electrode with Adeps neutralis (solid fat) as binder was developed for the determination of antimalarial endoperoxide artemisinin in plant matrix. The hemin modified electrode showed significant catalytic activity for the electrochemical reduction of artemisinin at about - 380 mV vs. Ag/AgCl in phosphate buffer solution of pH 7 by using cyclic and differential pulse voltammetry. Under optimized conditions strict linearity between artemisinin concentration and height of the cathodic catalytic current peak was observed in 4.8 x 10(-6)-7.8 x 10(-5) M concentration range (R = 0.9991) when using differential pulse voltammetry. The detection limit was calculated as 1.4 x 10(-6) M of artemisinin. The developed electroanalytical device is suitable for the determination of artemisinin in Artemisia annua extracts.
机译：开发了一种以中和酸（固体脂肪）为粘合剂的血红素块状修饰碳电极，用于测定植物基质中的抗疟疾内过氧化物青蒿素。血红素修饰的电极通过循环和微分脉冲伏安法在pH值为7的磷酸盐缓冲溶液中，在相对于Ag / AgCl约-380 mV时，对青蒿素的电化学还原具有显着的催化活性。在优化条件下，使用微分脉冲伏安法在4.8 x 10（-6）-7.8 x 10（-5）M浓度范围（R = 0.9991）下观察到青蒿素浓度与阴极催化电流峰值高度之间的严格线性。计算出的检出限为1.4 x 10（-6）M的青蒿素。研制的电分析仪适用于测定青蒿提取物中的青蒿素。

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