在水果上的杀虫剂残留物的分析使用抹布喷雾电离质谱仪
Thomas Michael Muggli1, Stefan Schürch1
1Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, 3012 Bern, Switzerland.
Molecules (Basel, Switzerland)
|September 28, 2023
概括
这项研究引入了扫喷雾电离,这是一种快速检测和量化食品表面农药残留物的方法. 它通过减少样本准备和色谱分离的需求来简化分析.
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:
- 全球农药使用造成环境和食品安全风险.
- 有效监测农药残留物需要先进的分析技术.
- 环境电离质谱学可减少样品准备和分析时间.
研究的目的:
- 为了评估片喷雾电离,用于选和量化果子表面的农药残留物.
- 调查影响抽样和电离效率的因素.
- 提出一种基于枯竭曲线的新型量化方法.
主要方法:
- 从水果表面取抽样,然后从抽样直接对其进行电离.
- 使用修改的电喷离子源来进行擦拭剂喷雾电离.
- 研究溶剂对 adduct 形成和 matrix 抑制的影响.
主要成果:
- 抽样喷雾电离证明了用于识别和量化极地接触农药残留物的有效性.
- 该方法减少了大量样品准备和色谱分离的需要.
- 介绍了一种使用枯竭曲线面积的新型量化方法.
结论:
- 片喷雾电离是一种快速有效的技术,用于分析食品中的农药残留物.
- 该方法适用于基于光谱库的识别和定量分析.
- 这种技术有助于改善食品安全和环境监测.
相关概念视频
01:12Electrospray Ionization (ESI) Mass Spectrometry
908
Higher molecular weight biomolecules are nonvolatile compounds that may decompose before ionizing or vaporizing during mass analysis with conventional electron impact ionization methods. Accordingly, electrospray ionization (ESI) is the favored method for vaporizing and ionizing biomolecules as it circumvents rapid fragmentation and enables the recording of mass signals for the entire biomolecule.
ESI utilizes electrical energy to transfer ions from the liquid phase of the sample into the...
ESI utilizes electrical energy to transfer ions from the liquid phase of the sample into the...
908
01:21Mass Spectrometry: Complex Analysis
818
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...
818