相关实验视频
Updated: May 12, 2026
05:15
An Aptamer-based Sensor for Unchelated GadoliniumIII
Published on: January 9, 2017
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在血清和水样中使用简单的基于氧化石墨烯的光吸食传感器进行 (II) 传感
Mosayeb Chaghazardi1, Soheila Kashanian2, Maryam Nazari3
1Faculty of Chemistry, Razi University, Kermanshah, Iran; Biosensor Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
概括
这项研究引入了一种敏感的感应器,用于使用氧化石墨烯和体检测 (II) 离子 (Hg2+). 该平台提供了一种简单,有选择性和高度敏感的方法,用于在真实样本中检测.
科学领域:
- 分析化学 分析化学
- 纳米材料是一种纳米材料.
- 生物感应是一种生物感应.
背景情况:
- (II) 离子 (Hg2+) 是高度有毒的环境污染物.
- 准确检测Hg2+对于环境监测和公共卫生至关重要.
- 现有的检测方法往往缺乏灵敏度,选择性或简单性.
研究的目的:
- 开发一个简单的,高度敏感的,选择性的度感应平台,用于Hg2+的确定.
- 利用氧化石墨烯 (GO) 和双体探头来增强传感能力.
- 在现实水和血清样本中验证平台的性能.
主要方法:
- 采用光标记探针 (Aptamer A) 和辅助探针 (Aptamer B) 的双阿普塔默系统的设计.
- 使用石墨烯氧化物 (GO) 作为光灭剂,通过π-π-堆积相互作用.
- 结合Hg2+会诱导亚体的构造变化,脱离GO并恢复光 (基于FRET的检测).
主要成果:
- 实现了Hg2+检测的宽线性范围:200.0900.0 fM和5.033.0 pM.
- 已证明具有高灵敏度,检测极限 (LOD) 为106.0 fM,量化极限 (LOQ) 为321.3 fM.
- 在真实水和血清样本中成功量化Hg2+,可接受的回收率,与原子吸收光谱学 (AAS) 验证,并使用复杂矩阵的多变量分析 (MCR-ALS).
结论:
- 开发的适应感应平台为Hg2+检测提供了强大的和高效的方法.
- 该传感器具有出色的选择性,灵敏性和适用于复杂的生物和环境样本的适用性.
- 这种方法为微量分析提供了有价值的工具.
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