Electrochemical Determination of Caffeine in Oolong Tea Based on Polyelectrolyte Functionalized Multi-Walled Carbon Nanotube

Yan Zhang; Jin Shang; Bo Jiang; Xianrong Zhou; Jianhua Wang

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Electrochemical Determination of Caffeine in Oolong Tea Based on Polyelectrolyte Functionalized Multi-Walled Carbon Nanotube

机译：聚电解质功能化多壁碳纳米管电化学测定乌龙茶中的咖啡因

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In the present work, a voltammetric sensor for detection of caffeine was prepared by modifying a glassy carbon electrode with Nafion and PDDA-MWCNT. This sensor shows high sensitivity for caffeine determination in the range from 0.3 to 80 μM, and the detection limit is 0.05 μM. Moreover, the sensor exhibits good stability, reproducibility and high activity for electrochemical oxidation of caffeine. Thus, it is available for the quantitative analysis of caffeine in Oolong tea.

机译：在本工作中，通过用Nafion和PDDA-MWCNT修饰玻璃碳电极，制备了用于检测咖啡因的伏安传感器。该传感器对咖啡因的测定显示高灵敏度，范围为0.3至80μM，检出限为0.05μM。此外，该传感器对于咖啡因的电化学氧化显示出良好的稳定性，可重复性和高活性。因此，可用于乌龙茶中咖啡因的定量分析。

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《International Journal of Electrochemical Science》 |2017年第3期|共11页
作者
Yan Zhang; Jin Shang; Bo Jiang; Xianrong Zhou; Jianhua Wang;
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Electrochemical Determination of Caffeine in Oolong Tea Based on Polyelectrolyte Functionalized Multi-Walled Carbon Nanotube

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