Simultaneous voltammetry detection of guanine and adenine in human serum with a CQDs / AuNPs @ MWCNTs modified glassy carbon electrode

被引：0

作者：

Jiang, Jiang ^{[1
]}

Zhuang, Qizhao ^{[1
]}

Deng, Shiting ^{[1
]}

Kong, Dexian ^{[1
]}

Chi, Yuwu ^{[2
]}

机构：

[1] College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou,350002, China

[2] Key Laboratory of Food Safety and Bioanalysis, Ministry of Education, School of Chemistry, Fuzhou University, Fuzhou,350108, China

来源：

Chinese Journal of Analysis Laboratory | 2021年 / 40卷 / 12期

关键词：

Fiber optic sensors - Glass - Glass membrane electrodes - Metal nanoparticles - Multiwalled carbon nanotubes (MWCN) - Nanocrystals - Positive ions - Semiconductor quantum dots;

D O I：

10.13595/j.cnki.issn1000-0720.2021.070905

中图分类号：

学科分类号：

摘要：

A modified glass carbon electrode (GCE) based on carbon quantum dots (CQDs) and gold nanoparticles (AuNPs)@ hydroxylated multi-wall carbon nanotubes (MWCNT-OHs) composite was fabricated and then employed to the selective and simultaneous determination of guanine and adenine. Compared with the other electrodes, the as prepared CQDs/AuNPs@ MWCNTs-OH modified electrode gave the highest peaks current and best peaks potential resolution. The electrochemical behaviors of guanine and adenine on the electrode were carefully investigated, and the results showed that, under the optimal condition, the oxidation peak currents concentrations of the analytes were linear with their concentrations in the range of 1-200 μmol/L and 2. 0-80 μmol/L, with the detection limits of 0. 9 and 1. 8 μmol/L for guanine and adenine, respectively. The modified electrode was used to simultaneous electrochemical analysis of GA and AE in human serum samples. The recoveries were between 90. 4%-107. 4%, which proved that the modified electrode was effective in biological samples. © 2021, Youke Publishing Co.,Ltd. All rights reserved.

引用

页码：1419 / 1424