期刊
TALANTA
卷 159, 期 -, 页码 356-364出版社
ELSEVIER
DOI: 10.1016/j.talanta.2016.06.044
关键词
Cyclic voltammetry; Modified electrode; Acetaminophen; Poly(caffeic acid); Nanoparticles
资金
- National Natural Science Foundation of China [21405121, 21375106, 21175107]
- Fundamental Research Funds for the Central Universities [Z109021303]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars, the State Education Ministry
- Northwest AF University [2452015444, Z111021010, Z109021309]
An Au nanoparticles/poly(caffeic acid) (AuNPs/PCA) composite modified glassy carbon (GC) electrode was prepared by successively potentiostatic technique in pH 7.4 phosphate buffer solution containing 0.02 mM caffeic acid and 1.0 mM HAuCl4. Electrochemical characterization of the AuNPs/PCA-GC electrode was investigated by electrochemical impedance spectroscopy and cyclic voltammetry. The electrochemical behavior of acetaminophen (AP) at the AuNPs/PCA-GC electrode was also studied by cyclic voltammetry. Compared with bare GC and poly(caffeic acid) modified GC electrode, the AuNPs/PCA-GC electrode was exhibited excellent electrocatalytic activity toward the oxidation of AP. The plot of catalytic current versus AP concentration showed two linear segments in the concentration ranges 0.2-20 mu M and 50-1000 mu M. The detection limit of 14 nM was obtained by using the first range of the calibration plot. The AuNPs/PCA-GC electrode has been successfully applied and validated by analyzing AP in blood, urine and pharmaceutical samples. (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据