技术说明:评估可携带的线性离子陷质谱仪,用于在控制的实验室条件下操作的扣押药物查
Alleigh N Couch1, Christina Chang1, J Tyler Davidson1
1Department of Forensic Science, Sam Houston State University, Huntsville, TX, USA.
Forensic science international
|January 31, 2025
概括
一个可携带的质谱仪显示了对快速现场药物查的希望. 这种经过验证的方法在案例样本中识别受控物质时实现了100%的准确性,支持移动实验室的使用.
科学领域:
- 法医化学 法医化学
- 分析化学 分析化学
- 质谱测量质量谱测量
背景情况:
- 越来越多的扣押毒品案件需要有效的证据分类.
- 现场或移动实验室药物查仪器具有显著的兴趣.
- 在现场实施之前,对新仪器的控制实验室评估至关重要.
研究的目的:
- 为了评估BaySpec ContinuityTM可携带线性离子陷 (LIT) 质谱仪,使用热消耗-大气压化学电离 (TD-APCI) 源进行扣押药物查.
- 开发和验证基于图书馆的警报选方法,以快速识别被扣押药物混合物中的受管制物质和切削剂.
- 在受控实验室条件下评估方法的性能,包括选择性,可重复性,可重复性和检测极限.
主要方法:
- 使用一个可携带的线性离子陷 (LIT) 质谱仪与热吸收-大气压化学电离 (TD-APCI) 源.
- 开发并验证了一种基于图书馆的警报选方法,针对常见的受管制物质和切削剂.
- 使用模拟和真实扣押的药物案例样本评估方法性能,包括对同位体物种差异化进行双重质谱 (MS/MS).
主要成果:
- 在盲目和真实案例样本中实现了对受控物质的100%正确识别率.
- 通过MS/MS分析,证明了区分异物种 (甲胺和胺) 的能力.
- 通过模拟扣押药物混合物验证选择性,可重复性和可重复性.
结论:
- 经过验证的基于图书馆的报警选方法显示,对快速查获的药物选有很大的希望.
- 便携式质谱仪系统在受控的实验室条件下有效.
- 这项技术支持在移动实验室环境中进行法医分析的潜在应用.
更多相关视频
10:13Author Spotlight: An Efficient Methodology to Confidently Differentiate and Characterize Fentanyl Analogs
Published on: November 8, 2024
2.0K
08:56Detection of Regulated Ergot Alkaloids in Food Matrices by Liquid Chromatography-Trapped Ion Mobility Spectrometry-Time-of-Flight Mass Spectrometry
Published on: November 22, 2024
547
相关概念视频
01:15High-Performance Liquid Chromatography: Types of Detectors
452
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...
452
01:19Mass Analyzers: Common Types
550
The quadrupole mass analyzer consists of four cylindrical metal rods arranged in a diamond carrying a DC voltage and a radio-frequency AC voltage. The motion of ions through the quadrupole depends on the field strength, causing only ions of a certain m/z to resonate successfully and strike the detector at a given field strength. Though the transmission rate for these analyzers is high, the exact elemental composition of the sample is not determined because of low resolution; however, they are...
550
01:21Mass Spectrometry: Complex Analysis
699
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...
699
01:21Tandem Mass Spectrometry
876
Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and signal-to-noise ratio for the analyte. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.
Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called collision-induced...
Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called collision-induced...
876
01:16Mass Spectrometers
5.1K
This lesson details the instrumentation of a mass spectrometer—a physical instrument to perform mass spectrometry on analyte molecules and record the characteristic mass spectra. This is achieved via three chief functions:
5.1K