对Tabun和VX在复杂和多元组件流体中无标签检测SERS性能的评估
Giulia Zappalà1, Elodie Dumont1,2, Gohar Soufi1,2
1The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, Denmark.
Heliyon
|June 13, 2024
概括
表面增强的拉曼散射 (SERS) 能够快速地在眼睛相关的溶液中检测神经毒剂,如Tabun和VX. 该技术为安全场景中的实时威胁检测提供了一种可行的方法.
科学领域:
- 分析化学 分析化学
- 化学安全 化学安全
- 频谱学是一种光谱学.
背景情况:
- 神经毒剂构成了严重的全球安全威胁,由简化生产方法加剧.
- 快速,现场,实时检测化学战剂对于安全至关重要.
- 表面增强拉曼散射 (SERS) 为基于现场的化学检测提供了一个有前途的技术.
研究的目的:
- 评估非功能化的SERS基板在现实样本矩阵中检测神经毒剂的性能.
- 用研究级和便携式仪器比较SERS检测的有效性.
- 评估现场SERS的可行性,以实时检测神经毒剂.
主要方法:
- 神经毒剂 (Tabun和VX) 被稀释在隐形眼镜溶液和基于咖啡因的眼睛血清中.
- 使用两个研究级仪器和两个便携式设备进行了SERS分析.
- 检测极限在没有样本预处理的情况下确定,使用小样本体积.
主要成果:
- 在两个矩阵中检测到Tabun,其实际检测极限 (LOD) 介于7-10.2 ppm之间.
- 检测VX更具挑战性,在隐形眼镜溶液中实现,LOD范围为0.6-5ppm.
- 赛尔斯证明了在复杂矩阵中检测神经毒物的可行性.
结论:
- SERS是一种可行的技术,用于在现场实时检测神经毒剂.
- 该研究验证了SERS的安全应用,特别是在涉及潜在化学威胁的场景中.
- 进一步开发可以提高SERS的敏感性和适用于更广泛的威胁检测的适用性.
相关概念视频
01:15High-Performance Liquid Chromatography: Types of Detectors
530
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...
530
01:21Mass Spectrometry: Complex Analysis
743
Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
743