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Updated: Jun 14, 2025

Gas Chromatography-Mass Spectrometry Paired with Total Vaporization Solid-Phase Microextraction as a Forensic Tool
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Gas Chromatography-Mass Spectrometry Paired with Total Vaporization Solid-Phase Microextraction as a Forensic Tool

Published on: May 25, 2021

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用深度环氧溶剂进行气色谱分析的微提取技术:一篇小小的回顾

Binyue Fan1, Jianan Wei2, Junchao Yang2

  • 1School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China. smshuang@sxu.edu.cn.

Analytical methods : advancing methods and applications
|September 5, 2024
PubMed
概括

深度环氧溶剂 (DES) 为气相色谱 (GC) 样品预处理提供了一个低成本,低毒性的替代品. 本综述探讨了DES在微提取技术中的应用,以加强分析样本的准备.

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Gas Chromatography: Introduction01:13

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Gas chromatography (GC) is a technique for separating and analyzing volatile compounds in a sample. Its primary purpose is to identify and quantify components in complex mixtures, making it essential in fields such as environmental analysis, pharmaceuticals, and petrochemicals. GC is also called vapor-phase chromatography (VPC) or gas-liquid partition chromatography (GLPC).
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Gas Chromatography: Sample Injection Systems

In gas chromatography, the sample is introduced as a vapor plug into the carrier gas stream for high efficiency and resolution. A microsyringe injects the sample solution into a heated sample port, vaporizing it and mixing it with the carrier gas. This process is important to ensure the sample is properly prepared for analysis. Thermally sensitive samples can be injected directly into the column and volatilized by slowly increasing the column temperature.
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Size-Exclusion Chromatography01:08

Size-Exclusion Chromatography

In size-exclusion chromatography (SEC), also known as molecular-exclusion or gel-permeation chromatography, molecules are separated based on their sizes. This technique is important for separating large molecules such as polymers and biomolecules. The two classes of micron-sized stationary phases encountered in SEC are silica particles and cross-linked polymer resin beads. Both materials are porous, but their pore sizes vary significantly.
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