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Related Concept Videos

Electrophoresis: Overview01:20

Electrophoresis: Overview

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Electrophoresis is a powerful analytical separation technique that relies on the differential migration of charged species when subjected to an electric field. The core strength of electrophoresis lies in its ability to separate high-molecular-weight species in complex mixtures. It has found widespread use in biochemistry, molecular biology, and analytical chemistry, allowing the separation of compounds like amino acids, nucleotides, carbohydrates, and proteins with excellent resolution.
There...
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Capillary Electrophoresis: Instrumentation01:20

Capillary Electrophoresis: Instrumentation

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Capillary electrophoresis instrumentation typically consists of several key components. A high-voltage power supply generates the electric field necessary for the separation by connecting to an anode (the positively charged electrode) and a cathode (the negatively charged electrode) located in buffer reservoirs at each end of the capillary tube. The system includes a sample vial, a fused silica capillary tube coated with polyimide for mechanical strength through which the sample components...
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Capillary Electrophoresis: Applications01:30

Capillary Electrophoresis: Applications

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Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
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Electrospray Ionization (ESI) Mass Spectrometry01:12

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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.
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Mass Spectrometry: Complex Analysis01:21

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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.
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MALDI-TOF Mass Spectrometry01:19

MALDI-TOF Mass Spectrometry

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Mass spectrometry is a powerful characterization technique that can identify and separate a wide variety of compounds ranging from chemical to biological entities, based on their mass-to-charge ratio (m/z). The instruments that allow this detection, known as mass spectrometers, have three components: an ion source, a mass analyzer, and a detector. These spectrometers differ based on the nature of their ion source and analyzers.Matrix-assisted laser desorption ionization (MALDI) is a commonly...
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Related Experiment Video

Updated: Apr 17, 2026

Sheathless Capillary Electrophoresis&#8211;Mass Spectrometry for Metabolic Profiling of Biological Samples
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Sheathless Capillary Electrophoresis–Mass Spectrometry for Metabolic Profiling of Biological Samples

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Capillary electrophoresis-mass spectrometry.

Masataka Wakayama1, Akiyoshi Hirayama, Tomoyoshi Soga

  • 1Institute for Advanced Biosciences, Keio University, 246-2 Mizukami, Kakuganji, Tsuruoka, Yamagata, 997-0052, Japan.

Methods in Molecular Biology (Clifton, N.J.)
|February 14, 2015
PubMed
Summary

Capillary electrophoresis-mass spectrometry (CE-MS) offers high-resolution analysis of charged metabolites in diverse biological samples. This technique is valuable for comprehensive metabolomics research, detailing practical procedures for its application.

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Area of Science:

  • Analytical Chemistry
  • Biochemistry
  • Metabolomics

Background:

  • Metabolomics studies require robust analytical techniques for comprehensive metabolite profiling.
  • Charged metabolites present unique separation and detection challenges in biological samples.

Purpose of the Study:

  • To provide detailed practical procedures for applying capillary electrophoresis-mass spectrometry (CE-MS) in metabolomics.
  • To highlight the advantages and broad applicability of CE-MS for analyzing charged species.

Main Methods:

  • Separation of charged metabolites using capillary electrophoresis (CE) based on charge and size.
  • Selective detection of separated metabolites using mass spectrometry (MS).
  • Application of CE-MS to various biological sample types, including bacteria, plants, mammals, and body fluids.

Main Results:

  • CE-MS demonstrates high resolution for charged metabolite separation.
  • The technique effectively analyzes both cationic and anionic charged species.
  • CE-MS is applicable across a wide range of biological matrices.

Conclusions:

  • CE-MS is a powerful and versatile tool for metabolomics research.
  • Detailed practical procedures enhance the accessibility and application of CE-MS.
  • The high resolution and broad applicability make CE-MS suitable for diverse biological investigations.