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Related Concept Videos

Gas Chromatography: Introduction01:13

Gas 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.
Gas Chromatography: Types of Columns and Stationary Phases01:17

Gas 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...
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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Engineering Molecular Recognition with Bio-mimetic Polymers on Single Walled Carbon Nanotubes
09:28

Engineering Molecular Recognition with Bio-mimetic Polymers on Single Walled Carbon Nanotubes

Published on: January 10, 2017

Carbon nanotubes: Solid-phase extraction.

Lidia M Ravelo-Pérez1, Antonio V Herrera-Herrera, Javier Hernández-Borges

  • 1Departamento de Química Analítica, Nutrición y Bromatología, Facultad de Química, Universidad de La Laguna (ULL), Avenida Astrofísico Francisco Sánchez, s/n, 38206 La Laguna, Tenerife, Spain.

Journal of Chromatography. A
|November 17, 2009
PubMed
Summary
This summary is machine-generated.

Carbon nanotubes (CNTs) offer unique properties for analytical chemistry, particularly in solid-phase extraction (SPE). This review highlights CNT applications in SPE, showcasing their growing importance.

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Last Updated: Jun 18, 2026

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09:28

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Published on: January 10, 2017

Transport of Surface-modified Carbon Nanotubes through a Soil Column
10:26

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09:12

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Published on: June 1, 2016

Area of Science:

  • Analytical Chemistry
  • Materials Science
  • Nanotechnology

Background:

  • Carbon nanotubes (CNTs) possess unique structural and chemical properties.
  • These properties make them suitable for diverse applications, including sensors and electronic materials.
  • CNTs are increasingly utilized in various analytical chemistry techniques.

Purpose of the Study:

  • To review the features and applications of solid-phase extraction (SPE) using carbon nanotubes (CNTs).
  • To cover the literature on CNT-based SPE from their introduction up to September 2009.

Main Methods:

  • Review of scientific literature focusing on carbon nanotubes in analytical chemistry.
  • Analysis of applications in matrix-assisted laser desorption ionization, chromatography, and capillary electrophoresis.
  • Specific focus on solid-phase extraction (SPE) techniques, including matrix solid-phase dispersion and solid-phase microextraction.

Main Results:

  • CNTs have demonstrated significant potential as materials for solid-phase extraction (SPE).
  • Their use in SPE has seen a considerable increase in published works over the last five years.
  • CNTs are effective as stationary phases in chromatography and pseudostationary phases in capillary electrophoresis.

Conclusions:

  • Carbon nanotubes are versatile materials with expanding applications in analytical chemistry.
  • SPE using CNTs is a rapidly developing area with significant promise.
  • Further research is expected to uncover more applications for CNTs in separation science.