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首页> 外文期刊>International Journal of Electrochemical Science >On-Surface Formation of Polyarginine/Reduced Graphene Oxide Film and Its Application in Measuring Puerarin in Healthcare Products
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On-Surface Formation of Polyarginine/Reduced Graphene Oxide Film and Its Application in Measuring Puerarin in Healthcare Products

机译：聚精氨酸/氧化石墨烯薄膜的表面形成及其在保健品中葛根素的测定中的应用

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摘要

Graphene was an ideal material for various applications including electrochemical sensing. To improve the selectivity of graphene-based sensors, preparation of composites of graphene is an effective way. In this work, films of polyarginine/reduced graphene oxide were in-situ formed on the surface of the electrode and used as an electrochemical sensor of puerarin. The films were systematically characterized and the established sensor gave a linear response range from 2.3 × 10–7 to 5.5 × 10–6 mol?L–1 and a limit of detection of 4.0 × 10–8 mol?L–1. The sensor was successfully applied for measuring puerarin in dietary supplements with a relative standard deviation of 2.4% and a standard recovery of 96.5%.
机译：石墨烯是包括电化学传感在内的各种应用的理想材料。为了提高基于石墨烯的传感器的选择性，制备石墨烯复合材料是一种有效的方法。在这项工作中，在电极表面上原位形成了聚精氨酸/氧化石墨烯薄膜，并用作葛根素的电化学传感器。对薄膜进行了系统表征，建立的传感器的线性响应范围为2.3×10–7 mol？L-1至5.5×10–6 mol？L–1，检出限为4.0×10–8 mol？L–1。该传感器已成功用于测量膳食补充剂中的葛根素，相对标准偏差为2.4％，标准回收率为96.5％。

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