Electrochemical Detection of Daphnetin Based on a Glassy Carbon Electrode Modified with Nafion and RGO-TEPA

被引：2
|
作者：
Zhou, Ming [1 ]
Sheng, Yunjie [1 ]
Li, Yangchun [1 ]
Wang, Yurong [1 ]
机构：
[1] Zhejiang Chinese Med Univ, Coll Pharmaceut Sci, Hangzhou 310053, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2021年 / 16卷 / 04期
关键词：
Daphnetin; electrochemical sensor; Nafion; reduced graphene oxide-tetraethylene pentamine (RGO-TEPA); REDUCED GRAPHENE OXIDE; TETRAETHYLENE PENTAMINE; IMMUNOSENSOR; NANOCOMPOSITE; DERIVATIVES; SENSOR; URINE; CELLS;
D O I：
10.20964/2021.04.46
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A sensitive electrochemical sensor composed of Nafion, tetraethylene pentamine-functionalized reduced graphene oxide (RGO-TEPA), and a glassy carbon electrode (GCE) was developed to analyze daphnetin (DAPH). The electrochemical behavior of DAPH on Nafion/RGO-TEPA/GCE was studied by cyclic voltammetry. The electroanalytical method for DAPH detection was established using differential pulse voltammetry. A detection limit of 0.5 nM (S/N = 3) and a linear calibration range of 0.1 to 10 mu M were obtained. The reproducibility and repeatability of the method were calculated to be 1.6% and 4.8%, respectively. The sensor showed good selectivity for DAPH and was successfully applied to detect DAPH in Zushima tablets. The content of DAPH in Zushima tablets detected by our sensor agreed well with that detected by HPLC.
引用
收藏
页码：1 / 18
页数：18
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