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Related Concept Videos

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.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
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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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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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Diffusion on Chromatography Columns01:07

Diffusion on Chromatography Columns

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In column chromatography, when an analyte is introduced as a narrow band at the top of the column, the solutes begin to separate and broaden, developing a Gaussian profile. This broadening occurs due to various factors, such as longitudinal diffusion.
Longitudinal diffusion occurs when the solute molecules in the mobile phase diffuse from the more concentrated center of the chromatographic band to the more dilute regions on either side, both towards and against the flow direction. This...
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Two-dimensional Gel Electrophoresis01:22

Two-dimensional Gel Electrophoresis

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Two-dimensional gel electrophoresis is a high-resolution protein separation method first introduced by O' Farrell and Klose in 1975. This method involves protein separation by two dimensions, mass and charge, making it more accurate than one-dimensional gel electrophoresis.
The first dimension separation uses the isoelectric focusing or IEF technique performed on immobilized pH gradient (IPG) strips that separate proteins according to their isoelectric points.
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High-Performance Liquid Chromatography: Elution Process01:05

High-Performance Liquid Chromatography: Elution Process

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In High-Performance Liquid Chromatography (HPLC), the elution process is critical to the separation of analytes and the quality of chromatographic results. Elution describes how compounds move through the column and separate based on their interactions with the mobile and stationary phases. This process determines the resolution, peak shape, and retention times in the chromatogram, which are essential for identifying and quantifying components in complex mixtures. Understanding the elution...
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Updated: Sep 3, 2025

Amplification of Escherichia coli in a Continuous-Flow-PCR Microfluidic Chip and Its Detection with a Capillary Electrophoresis System
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Recent progress in analytical capillary isotachophoresis (2018 - March 2022).

Zdena Malá1, Petr Gebauer1

  • 1Institute of Analytical Chemistry of the Czech Academy of Sciences, v.v.i., CZ-602 00 Brno, Czech Republic.

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|July 22, 2022
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Summary

This review covers analytical capillary and microchip isotachophoresis advancements from 2018-2022. New instrumental developments and applications highlight the continued potential of this separation technique.

Keywords:
Analytical electrophoresisIsotachophoresis (ITP)Review

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Area of Science:

  • Analytical Chemistry
  • Separation Science

Background:

  • Analytical capillary and microchip isotachophoresis (CE/MI) have seen significant research activity.
  • The period from 2018 to early 2022 has been a focus for advancements in these techniques.

Purpose of the Study:

  • To review and summarize recent developments in analytical capillary and microchip isotachophoresis.
  • To highlight theoretical, instrumental, and application-focused progress in the field.

Main Methods:

  • Literature review of scientific papers published between 2018 and Q1 2022.
  • Analysis of theoretical studies, instrumental innovations, and analytical applications.

Main Results:

  • Theoretical research continues to advance fundamental knowledge, particularly through computer simulations for electrolyte system design.
  • Instrumental developments include novel microfluidic devices and hyphenation with various detection techniques, yielding significant results.
  • Analytical applications demonstrate the versatility and potential of contemporary isotachophoresis.

Conclusions:

  • Despite not being a mass-scale technique, isotachophoresis maintains strong interest due to its unique features.
  • Its application as both a standalone method and within multidimensional separation strategies is expanding.