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Related Concept Videos

Mass Spectrometry: Complex Analysis01:21

Mass Spectrometry: Complex Analysis

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...
Chromatographic Methods: Classification01:12

Chromatographic Methods: Classification

Chromatographic techniques are classified in three ways: the classification is based on the physical state of the stationary and mobile phases, how the mobile phase and the stationary phase contact each other, or through the chemical or physical processes that isolate the components of the sample. Typically, the mobile phase is either a liquid or gas, while the stationary phase is either a solid or a liquid layer applied to a solid surface.
Chromatographic techniques are typically named by...
Gas Chromatography–Mass Spectrometry (GC–MS)01:14

Gas 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...
Chromatographic Methods: Terminology01:18

Chromatographic Methods: Terminology

Chromatography is an analytical technique widely used in fields such as chemistry, biology, environmental science, and pharmaceuticals to separate the components of a mixture and identify substances between them. The process of chromatography is based on the interactions between two distinct phases: the stationary phase and the mobile phase. The stationary phase is fixed in place by a supporting material, while the mobile phase moves over it, carrying the solutes. As the mobile phase travels,...
Chromatography: Introduction01:10

Chromatography: Introduction

Chromatography is a technique used to separate compounds based on differences of partitioning between two phases, the stationary phase and the mobile phase.
The phase in which the compounds linger or on which the compounds adsorb is called the stationary phase, whereas the mobile phase is the solvent that carries the solutes to be analyzed. In traditional column chromatography, the mixture flows through the stationary phase, and the compounds partition between the stationary and mobile phases...
High-Performance Liquid Chromatography: Types of Detectors01:15

High-Performance Liquid Chromatography: Types of Detectors

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 properties and...

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Multidimensional chromatography in food analysis.

Miguel Herrero1, Elena Ibáñez, Alejandro Cifuentes

  • 1Sección Departamental Ciencias de la Alimentación, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain.

Journal of Chromatography. A
|August 25, 2009
PubMed
Summary

This review covers advances in multidimensional chromatography for food analysis. It explores various combinations of GC, LC, and SFC, detailing their pros, cons, and applications.

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Area of Science:

  • Analytical Chemistry
  • Food Science

Background:

  • Chromatographic techniques are essential for complex food matrix analysis.
  • Multidimensional approaches offer enhanced separation power for challenging samples.

Purpose of the Study:

  • To review recent developments in multidimensional chromatography for food analysis.
  • To examine various chromatographic couplings and their applications.

Main Methods:

  • Review of multidimensional gas chromatography (GC).
  • Review of multidimensional liquid chromatography (LC).
  • Review of multidimensional supercritical fluid chromatography (SFC).
  • Examination of combined multidimensional techniques.

Main Results:

  • Detailed discussion of advantages and disadvantages of each multidimensional technique.
  • Description of key applications in food analysis for each method.
  • Analysis of synergistic benefits from combined chromatographic systems.

Conclusions:

  • Multidimensional chromatography significantly enhances food analysis capabilities.
  • Specific combinations of GC, LC, and SFC offer tailored solutions for diverse food analytes.
  • Further development in multidimensional techniques promises greater insights into food composition and safety.