相关实验视频

Updated: Jul 23, 2025

Author Spotlight: High-Quality Quantum Dot Nanobeads for Sensitive Fluorescent Lateral Flow Immunoassays

Author Spotlight: High-Quality Quantum Dot Nanobeads for Sensitive Fluorescent Lateral Flow Immunoassays

Published on: June 28, 2024

基于添加碳点和Cu2+的开启式光传感器,用于敏感和选择性地检测草甘

Ziqiang Li^1,2,3, Shuang Liang³, Li Zhou^1,2

¹Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China.

Foods (Basel, Switzerland)

|July 14, 2023

概括

一种新型的光传感器使用化碳量子点 (NCD) 检测到草甘残留物. 该方法提供了水和大米样本中草甘的敏感和选择性分析,有助于环境和食品安全监测.

科学领域:

材料科学材料科学材料科学
环境科学环境科学
分析化学分析化学

背景情况:

草甘是一种广泛使用的除草剂,由于残留物,可能对环境和人类健康产生影响.
开发敏感和选择性的草甘检测方法对于监测其在各种矩阵中的存在至关重要.

研究的目的:

为了合成化碳量子点 (NCDs) 用于光传感.
开发一种灵敏的开启式光传感器,用于检测草甘.
为了验证传感器在环境水和大米样本中的性能.

主要方法:

合成水溶性NCDs (1.55nm) 与蓝色光从酸和腺因.
构建一个光传感器,利用Cu2+在NCD上的光灭效应.
在添加草甘后,光恢复的演示,表明启动传感机制.

主要成果:

这些NCDs通过光诱导电子转移 (PET) 通过Cu2+表现出光灭.
添加草甘恢复了光,使敏感检测成为可能.
开发的传感器实现了草甘的低检测极限 (LOD):在水中为0.021μg/mL,在米中为0.049μg/mL.
在真实样本中检测到草甘时,获得了令人满意的恢复 (82.1%113.0%).

结论:

一个新的,灵敏的,选择性的开启光传感器用于草甘检测成功地使用NCDs和Cu2+开发.
拟议的方法显示了在环境和农业样本中监测草甘残留物的巨大潜力.
简单的样品预处理和高回收率凸显了这种传感策略的实际可用性.

关键词:

碳量子点是指一个量子点.光是一种光.草甘检测检测仪草甘检测仪米米饭米饭米饭米饭.水水水的水水的水

更多相关视频

Highly Sensitive and Rapid Fluorescence Detection with a Portable FRET Analyzer

Highly Sensitive and Rapid Fluorescence Detection with a Portable FRET Analyzer

Published on: October 1, 2016

Author Spotlight: Development and Application of SERS Flexible Substrates Using Synthesized AgNPs

Author Spotlight: Development and Application of SERS Flexible Substrates Using Synthesized AgNPs

Published on: November 17, 2023

相关概念视频

Key Elements for Plant Nutrition

Key Elements for Plant Nutrition

Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...

Labeling DNA Probes

Labeling DNA Probes

DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...