Related Experiment Video
Updated: Jun 30, 2026
05:31
Gas Chromatography-Mass Spectrometry Paired with Total Vaporization Solid-Phase Microextraction as a Forensic Tool
Published on: May 25, 2021
Fiber-packed needle-type sample preparation device designed for gas chromatographic analysis.
Yoshihiro Saito1, Ikuo Ueta, Mitsuhiro Ogawa
1School of Materials Science, Toyohashi University of Technology, Toyohashi, 441-8580, Japan. saito@chrom.tutms.tut.ac.jp
Analytical and Bioanalytical Chemistry
|September 27, 2008
Summary
This review covers a miniaturized fiber-packed needle for sample preparation. The technique enhances sensitivity for analyzing volatile organic compounds (VOCs) using gas chromatography, ideal for on-site environmental analysis.
Area of Science:
- Analytical Chemistry
- Environmental Science
Background:
- Traditional sample preparation methods can be time-consuming and require large sample volumes.
- Analyzing volatile organic compounds (VOCs) often demands high sensitivity and efficient preconcentration.
Purpose of the Study:
- To review a miniaturized fiber-packed needle technique for sample preparation.
- To highlight its application in analyzing volatile organic compounds (VOCs) via gas chromatography.
- To discuss its potential for on-site environmental sampling.
Main Methods:
- Utilizing a fine-fiber-packed needle (12 microm o.d.) as the extraction medium.
- Packing the needle longitudinally with surface-coated fine filaments.
- Incorporating simultaneous derivatization reactions within the extraction process.
Main Results:
- Successful sample preconcentration was achieved using the fiber-packed needle.
- Improved analytical sensitivity was demonstrated through the integrated derivatization.
- The needle exhibited good storage performance, suitable for on-site applications.
Conclusions:
- The fiber-packed extraction needle is a promising miniaturized device for sample preparation.
- The technique offers enhanced sensitivity and preconcentration for VOC analysis.
- Its suitability for on-site environmental sampling was clearly demonstrated.
Related Concept Videos
01:08Gas 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.
Two primary injection methods are used...
Two primary injection methods are used...
01:14Gas Chromatography–Mass Spectrometry (GC–MS)
Gas chromatography–mass spectrometry (GC–MS) is the combination of analytical techniques of gas chromatography and mass spectrometry in a single instrument for analyzing a mixture of compounds. The gas chromatograph separates the compounds in the mixture, and the mass spectrometer analyzes each compound separately to determine the molecular masses and molecular structures.
A gas chromatograph consists of a long, narrow capillary column with a polysiloxane coating on the inner wall. The coating...
A gas chromatograph consists of a long, narrow capillary column with a polysiloxane coating on the inner wall. The coating...
01:13Gas Chromatography: Introduction
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).
In GC, a sample is vaporized and mixed with an inert carrier gas (the mobile phase), which transports it through a column.
In GC, a sample is vaporized and mixed with an inert carrier gas (the mobile phase), which transports it through a column.
01:21Sample Preparation for Analysis: Overview
Sample preparation is an essential step in the analytical process. It involves preparing a sample so that it can be analyzed accurately. The goal is to extract the analyte, the substance you want to measure, from the sample while removing any components that may interfere with the analysis. Sample preparation techniques vary depending on the physical state of the sample.
Bulk or large solid samples are typically reduced in size using grinding, crushing, or milling techniques to increase the...
Bulk or large solid samples are typically reduced in size using grinding, crushing, or milling techniques to increase the...
01:17Gas Chromatography: Types of Columns and Stationary Phases
Gas chromatography (GC) relies on stationary phases to separate and analyze components in a sample. There are two main types of stationary phases: liquid and solid. Liquid stationary phases are non-volatile, thermally stable, and chemically inert liquids coated onto the column. Solid stationary phases are particles of adsorbent material, such as silica gel or molecular sieves.
For an analyte to remain on the column for a sufficient amount of time, it must exhibit some level of compatibility (or...
For an analyte to remain on the column for a sufficient amount of time, it must exhibit some level of compatibility (or...
01:21Gas Chromatography: Types of Detectors-I
There are different types of detectors used in gas chromatography, each with its own specific properties that make it suitable for detecting certain types of analytes. The most commonly used detectors in GC are thermal conductivity detector (TCD), flame ionization detector (FID), and electron capture detector (ECD).
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...