Determination of Aloe Emodin by Carbon Fiber Ultramicroelectrodes with Linear Gold Nanoparticles

杨莉莉; 王婷婷; 鲍昌昊; 程寒

doi:doi：10.3969/j.issn.1004-4957.2020.03.017

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Determination of Aloe Emodin by Carbon Fiber Ultramicroelectrodes with Linear Gold Nanoparticles

更新时间：2023-05-25

- Determination of Aloe Emodin by Carbon Fiber Ultramicroelectrodes with Linear Gold Nanoparticles
- Vol. 39, Issue 3, Pages: 401-405(2020)
- 作者机构：
  
  1. 中南民族大学药学院
  2. 中南民族大学民族药学国家级实验教学示范中心
- 作者简介：
- 基金信息：
- DOI：doi：10.3969/j.issn.1004-4957.2020.03.017
  CLC：
- Published：2020
- 稿件说明：
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杨莉莉, 王婷婷, 鲍昌昊, 程寒. Determination of Aloe Emodin by Carbon Fiber Ultramicroelectrodes with Linear Gold Nanoparticles[J]. 2020, 39(3): 401-405.
DOI：

杨莉莉, 王婷婷, 鲍昌昊, 程寒. Determination of Aloe Emodin by Carbon Fiber Ultramicroelectrodes with Linear Gold Nanoparticles[J]. 2020, 39(3): 401-405. DOI： doi：10.3969/j.issn.1004-4957.2020.03.017.

摘要

该文建立了芦荟大黄素(AE)的电化学检测方法。通过柠檬酸三钠还原氯金酸制备线状纳米金，采用一步恒电位沉积方法将线状纳米金沉积在碳纤维超微电极(CFME)表面，考察了电极修饰前后对AE的电催化性能，得到最佳修饰时间为12 min。结果表明，线状纳米金修饰碳纤维电极(LGN/CFME)的氧化峰电流与AE浓度在2.0×10-6~1.0×10-4 mol/L范围内呈良好线性关系，线性方程为Ip(nA)=0.318 1C(μmol/L)+25.01，r2=0.965 3，检出限(S/N=3)为6.19×10-7 mol/L，说明此方法可用于芦荟汁中AE的定量检测。

Abstract

An electrochemical method with linear gold nanoparticles modified carbon fiber ultramicroelectrodes(LGN/CFME) was proposed for the detection of aloe emodin(AE).The LGN/CFME were prepared with chloroauric acid reduced with sodium citrate

depositing on the surface of CFME by one step potentiostatic deposition.The electrocatalytic performance of the CFME towards AE before and after electrode modification was investigated

and the optimal deposition time was 12 min.Results showed that there was a good linear relationship between oxidation peak current and AE concentration in the range of 2.0×10-6-1.0×10-4 mol/L

with a correlation coefficient(r2) of 0.965 3 and a linear regression equation of Ip(nA)=0.318 1 C(μmol/L)+25.01.The detection limit(S/N=3) was 6.19×10-7 mol/L.The method could be applied in the determination of AE in aloe juice.

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