相关实验视频

Updated: Jun 11, 2025

IridiumIII Luminescent Probe for Detection of the Malarial Protein Biomarker Histidine Rich Protein-II

IridiumIII Luminescent Probe for Detection of the Malarial Protein Biomarker Histidine Rich Protein-II

Published on: July 7, 2015

一个基于功能化的离子液体的高度敏感的光探针,用于及时检测食品中的微量Hg2+和CH3Hg+

Siying Che¹, Yao Fan¹, Xuemei Hu¹

¹College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China.

|September 28, 2024

概括

使用基于光素的离子液体 (ILs) 的新型光探针能够快速检测食品中的 (Hg2+) 和甲基 (CH3+) . 这种传感器提供视觉检测,即使存在干扰物质,也能正常工作.

科学领域:

分析化学分析化学
环境科学环境科学
食品安全食品安全

背景情况:

(Hg²⁺) 和甲基 (CH₃Hg⁺) 是有毒的重金属,对人类健康和环境造成重大风险.
准确和快速检测食品中的这些污染物的方法对于确保消费者安全至关重要.
现有的检测方法可能受到灵敏度,速度或易受干扰的限制.

研究的目的:

开发一种新的光探针,用于在食品矩阵中敏感和选择性检测Hg2+和CH3的.
为了实现物种的快速,视觉和准确量化.
创建一个多功能传感器平台,可适应现场和实时监控.

主要方法:

光探针的制造方法是将修改后的光素加入到功能化的离子液体 (ILs) 中.
探测器对Hg²⁺和CH₃的灵敏度和选择性的表征,使用光谱计.
评估探针在真实食品样本 (绿茶,液体) 中的性能,并评估常见离子和配体的干扰.
开发一种基于纸张的传感器格式,用于视觉检测.

主要成果:

开发的探头对Hg²⁺ (0.4nM) 和CH₃ (60nM) 的高灵敏度.
肉眼可检测Hg²⁺和CH_{3的Hg⁺分别在0.1微米和1微米的度下.}
探测器证明了对潜在的干扰离子和有机连接体的强度.
在真实食品样本中成功检测出Hg²⁺和CH_3.
基于纸质的传感器格式允许可视检测Hg²⁺和CH₃Hg⁺到10nm.

结论:

基于光素的新型离子液体探针为食品中Hg2+和CH3的快速,敏感和选择性检测提供了一个有前途的工具.
探测器克服干扰的能力及其适应性以纸质形式突出其在食品安全监测中的实际应用潜力.
这种方法提供了一种有价值的方法,以确保食品对污染的安全.

关键词:

CH ((3) Hg ((+)) 的时间.光检测的检测方法 Hg(2+) 的时间.离子液体是一种离子液体.基于纸张的传感器传感器

更多相关视频

Qualitative Identification of Carboxylic Acids, Boronic Acids, and Amines Using Cruciform Fluorophores

Qualitative Identification of Carboxylic Acids, Boronic Acids, and Amines Using Cruciform Fluorophores

Published on: August 19, 2013

Direct Detection of Isolevuglandins in Tissues Using a D11 scFv-Alkaline Phosphatase Fusion Protein and Immunofluorescence

Direct Detection of Isolevuglandins in Tissues Using a D11 scFv-Alkaline Phosphatase Fusion Protein and Immunofluorescence

Published on: July 5, 2021

相关概念视频

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...

FISH - Fluorescent In-situ Hybridization

FISH - Fluorescent In-situ Hybridization

Fluorescence in situ hybridization, or FISH, was developed in the early 1980s and has quickly become one of the most widely used techniques in cytogenetics. Labeled probes are used to bind complementary DNA or RNA sequences on a chromosome or in a region within a cell. Earlier, the probes could only be obtained by cloning or reverse transcription of a DNA template. Currently, the probe oligonucleotides can be synthesized synthetically. Additionally, with the advancement of optical techniques,...

Photoluminescence: Applications

Photoluminescence: Applications

Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...

High-Performance Liquid Chromatography: Types of Detectors

High-Performance Liquid Chromatography: Types of Detectors

The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte...

Gas Chromatography: Types of Detectors-II

Gas Chromatography: Types of Detectors-II

In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...