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Related Concept Videos

Types Of Column Chromatography01:29

Types Of Column Chromatography

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The stability and compatibility of column material with samples are crucial for efficient purification in chromatographic techniques. Various operating parameters such as pH, temperature, or solvent affect the packing of the column material, thereby determining the purification efficiency. The choice of column material also plays an essential role in deciding the operating parameters and can be modified based on the proteins that need to be purified.
Gel Filtration Chromatography
When the...
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Principles Of Column Chromatography01:13

Principles Of Column Chromatography

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The chromatography technique was first invented in 1901 by Michael S. Tswett, a Russian botanist, to separate plant pigments using organic solvents. Further, in 1941, Archer John Porter Martin and R. L. M. Synge modified the technique by packing silica gel into a column. A mixture of amino acids was then separated on the packed column using chloroform and water mixture as the mobile phase. This was the first report on column chromatography. At present, column chromatography is a widely used...
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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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Silica Gel Column Chromatography: Overview01:10

Silica Gel Column Chromatography: Overview

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Silica gel column chromatography is a technique for separating compounds using a column packed with silica gel as the stationary phase. This method relies on differences in the polarity of compounds. Based on their polarities, compounds move between the stationary phase (silica gel) and the mobile phase (the solvent), forming discrete bands in the column.
Polar components tend to bind strongly to the silica gel, causing them to move slowly through the column. In contrast, nonpolar compounds...
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High-Performance Liquid Chromatography: Introduction01:11

High-Performance Liquid Chromatography: Introduction

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High-performance liquid chromatography(HPLC), formerly referred to as High-pressure liquid chromatography, is a powerful technique used to separate, identify, and quantify components in complex mixtures. The term "high pressure" refers to using high pressure to push the liquid mobile phase through the tightly packed columns.
In HPLC, two phases play a critical role in the separation process:
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High-Performance Liquid Chromatography: Instrumentation00:57

High-Performance Liquid Chromatography: Instrumentation

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High-performance liquid chromatography, or HPLC, is an analytical technique that separates liquid samples under high pressures. An HPLC instrument consists of glass bottles for storing solvents called mobile phase reservoirs. HPLC-grade solvents are used to maintain high purity, and the dissolved gases are removed using a degasser, such as a vacuum pumping system or sparging with helium. The solvents are then pumped into the analytical column using a screw-driven syringe or reciprocating pumps.
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Related Experiment Video

Updated: Jan 28, 2026

Automated Hydrophobic Interaction Chromatography Column Selection for Use in Protein Purification
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Automated Hydrophobic Interaction Chromatography Column Selection for Use in Protein Purification

Published on: September 21, 2011

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Column selection for comprehensive two-dimensional liquid chromatography using the hydrophobic subtraction model.

Rebecca K Lindsey1, Becky L Eggimann2, Dwight R Stoll3

  • 1Department of Chemistry and Chemical Theory Center, University of Minnesota, 207 Pleasant Street SE, Minneapolis, MN 55455-0431, USA.

Journal of Chromatography. A
|February 25, 2019
PubMed
Summary

A new computational method screens two-dimensional (2D) liquid chromatography (LC) column pairs virtually. This approach predicts optimal pairs for resolving complex samples, improving analytical efficiency.

Keywords:
Hydrophobic subtraction modelReversed-phase liquid chromatographyTwo-dimensional chromatography

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Automated Hydrophobic Interaction Chromatography Column Selection for Use in Protein Purification
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Chromatographic Fingerprinting by Template Matching for Data Collected by Comprehensive Two-Dimensional Gas Chromatography
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Area of Science:

  • Analytical Chemistry
  • Chromatography

Background:

  • Two-dimensional (2D) liquid chromatography (LC) offers enhanced peak capacity for complex sample resolution.
  • Selecting optimal column pairs for 2D-LC is challenging, often relying on empirical methods.

Purpose of the Study:

  • To develop a predictive computational screening method for selecting 2D-LC column pairs.
  • To identify column combinations that maximize analyte resolution in 2D-LC.

Main Methods:

  • Utilized the Snyder-Dolan hydrophobic subtraction model (HSM) for reversed-phase column selectivity.
  • Calculated virtual 2D chromatograms for 319,225 column pairs across 565 columns and 1000 diverse analytes.
  • Employed a computational screening approach to predict column pair performance.

Main Results:

  • The computational method accurately predicts column pairs with high analyte resolution capabilities.
  • Second dimension column choice significantly impacts resolution, favoring those with embedded polar moieties.
  • First dimension column selection showed less preference for C18 and phenyl types.

Conclusions:

  • The proposed computational screening method enhances 2D-LC column pair selection.
  • This predictive approach optimizes the resolution of complex mixtures in 2D-LC analysis.
  • The findings guide the rational design of 2D-LC methods for improved analytical outcomes.