相关实验视频

Updated: Jun 27, 2026

A Method for Selecting Structure-switching Aptamers Applied to a Colorimetric Gold Nanoparticle Assay

A Method for Selecting Structure-switching Aptamers Applied to a Colorimetric Gold Nanoparticle Assay

Published on: February 28, 2015

基于AuNPs的简单和可视色度测试传感器,用于快速检测环境样本中的硫甲

Luwei Chai¹, Yarong Wang¹, Shuang Jiang¹

¹Key Laboratory of Conservation and Utilization of Freshwater Fishes, Animal Biology Key Laboratory of Chongqing Education Commission of China, College of Life Sciences, Chongqing Normal University, Chongqing 401331, China.

|February 26, 2026

概括

这项研究开发了一种快速的视觉胃口传感器,用于检测环境样本中的硫甲 (SMZ) 残留物. 该传感器具有高灵敏度和精度,对于监测畜牧业产生的潜在风险至关重要.

科学领域:

环境科学环境科学
分析化学分析化学
生物技术是生物技术.

背景情况:

硫甲 (SMZ) 是一种常见的兽医抗生素,其在水和土壤中的残留物构成生态和人类健康风险.
在环境矩阵中有效监测SMZ对于风险评估和管理至关重要.

研究的目的:

开发一种新的,快速的,可视化的适应传感器,用于在环境样本中检测SMZ.
通过分子动力学模拟和现实世界样本分析来验证适应传感器的性能.

主要方法:

基于金纳米粒子 (AuNP) 的色度感应传感器的构建,采用SMZ1S吸收器.
通过线性范围,检测极限和选择性研究,优化传感器条件和性能评估.
使用分子动力学模拟和和恢复实验在湖水,自来水和土壤样本中的验证,与HPLC相比.

主要成果:

胃感应器显示了广泛的线性范围 (0.050.4μg/mL) 和低检测极限 (0.039μg/mL).
分子动力学模拟证实了稳定的aptamer-SMZ结合,支持高传感器选择性.
在不同的环境矩阵中,尖峰和恢复测试显示了高准确度 (87.3105.5%) 和精度 (RSD 4.810.6%).

结论:

开发的基于AuNP的色度适应传感器是一种简单,有效和快速的工具,用于在环境样本中检测SMZ.
传感器的性能相当于HPLC,为现场监控提供了可行的替代方案.
这项技术有助于更好地对兽药残留物进行环境监测.

关键词:

澳大利亚国家企业 (AuNPs) 是一个aptamer的应用程序.一个适应传感器.硫甲酸盐是一种硫甲.

更多相关视频

A Filter-based Surface Enhanced Raman Spectroscopic Assay for Rapid Detection of Chemical Contaminants

A Filter-based Surface Enhanced Raman Spectroscopic Assay for Rapid Detection of Chemical Contaminants

Published on: February 19, 2016

Design and Development of Aptamer–Gold Nanoparticle Based Colorimetric Assays for In-the-field Applications

Design and Development of Aptamer–Gold Nanoparticle Based Colorimetric Assays for In-the-field Applications

Published on: June 23, 2016

相关概念视频

Atomic Absorption Spectroscopy: Lab

Atomic Absorption Spectroscopy: Lab

For AAS measurements, samples must be introduced as clear solutions, often requiring extensive preliminary treatment to dissolve materials like soils, animal tissues, and minerals. Common methods for sample preparation include treatment with hot mineral acids, wet ashing, combustion in closed containers, high-temperature ashing, or fusion with reagents.
Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing nebulizer...

Atomic Emission Spectroscopy: Overview

Atomic Emission Spectroscopy: Overview

Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...