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Capillary Electrophoresis: Applications

Capillary Electrophoresis: Applications

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.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...

Capillary Electrophoresis: Instrumentation

Capillary Electrophoresis: Instrumentation

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...

Electrophoresis: Overview

Electrophoresis: Overview

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...

Ion-Exchange Chromatography

Ion-Exchange Chromatography

Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...

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Related Experiment Video

Updated: May 8, 2026

Amplification of Escherichia coli in a Continuous-Flow-PCR Microfluidic Chip and Its Detection with a Capillary Electrophoresis System

Amplification of Escherichia coli in a Continuous-Flow-PCR Microfluidic Chip and Its Detection with a Capillary Electrophoresis System

Published on: November 21, 2023

Droplet-interfaced microchip and capillary electrophoretic separations.

Xize Niu¹, Fiona Pereira, Joshua B Edel

¹Faculty of Engineering and the Environment and Institute for Life Sciences, University of Southampton , Highfield, Southampton, SO17 1BJ, United Kingdom.

Analytical Chemistry

|August 21, 2013

Summary

This summary is machine-generated.

This study introduces a novel microfluidic platform for precise sample injection in electrophoresis. The droplet-based system enhances high-throughput analysis and reduces contamination in genomics and proteomics.

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Microfluidic Chip Fabrication and Method to Detect Influenza

Microfluidic Chip Fabrication and Method to Detect Influenza

Published on: March 26, 2013

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Last Updated: May 8, 2026

Amplification of Escherichia coli in a Continuous-Flow-PCR Microfluidic Chip and Its Detection with a Capillary Electrophoresis System

Amplification of Escherichia coli in a Continuous-Flow-PCR Microfluidic Chip and Its Detection with a Capillary Electrophoresis System

Published on: November 21, 2023

Microfluidic Chip Fabrication and Method to Detect Influenza

Microfluidic Chip Fabrication and Method to Detect Influenza

Published on: March 26, 2013

Area of Science:

Analytical Chemistry
Microfluidics
Biotechnology

Background:

Capillary and chip-based electrophoresis are essential for analyzing complex biological samples in genomics, proteomics, metabolomics, and cellular analysis.
Current limitations in sample injection methods hinder high-throughput and multidimensional electrophoretic separations.

Purpose of the Study:

To develop a simple and efficient sample injection platform for electrophoretic separations.
To overcome the limitations of traditional injection methods for enhanced analytical throughput and precision.

Main Methods:

Development of a microfluidic module for droplet-based encapsulation of analytes.
Integration of the microfluidic module with an electrophoretic separation channel.
Precise injection of picoliter (pL) to nanoliter (nL) volume sample plugs.

Main Results:

Achieved precise and reproducible injection of isolated sample plugs.
Demonstrated a platform free from inter-sample contamination.
Enabled small sample volume requirements and high-throughput analysis.

Conclusions:

The developed droplet-based microfluidic platform significantly improves sample injection for electrophoresis.
This innovation enhances the utility of electrophoresis for high-throughput, quantitative analysis in various 'omics' fields.
The platform offers a robust solution for precise and contamination-free sample handling.