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Related Concept Videos

Thin-Layer Chromatography (TLC): Overview01:11

Thin-Layer Chromatography (TLC): Overview

Thin-layer chromatography (TLC) is a chromatography technique that separates compounds based on their polarity. TLC typically uses polar silica gel, a form of silicon dioxide, as the stationary phase. The silica gel contains hydroxyl (OH) groups on its surface, which form hydrogen bonds with polar compounds, influencing their adhesion to the stationary phase.
To begin the analysis, a mixture of compounds is spotted on the starting line on the TLC plate using a thin capillary. The bottom of the...
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,...
Principles Of Column Chromatography01:13

Principles Of Column Chromatography

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...
Supercritical Fluid Chromatography01:18

Supercritical Fluid Chromatography

Supercritical fluid chromatography (SFC) provides a beneficial substitute for gas chromatography (GC) and liquid chromatography (LC) for certain samples because it merges the top attributes of both techniques. SFC allows the separation and analysis of compounds that GC or LC does not easily manage. These compounds are traditionally nonvolatile or thermally unstable, making GC unsuitable and lacking functional groups required for HPLC analysis.
SFC utilizes a supercritical fluid mobile phase,...
Silica Gel Column Chromatography: Overview01:10

Silica Gel Column Chromatography: Overview

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...
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...

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Chromatographic Fingerprinting by Template Matching for Data Collected by Comprehensive Two-Dimensional Gas Chromatography
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Flash column chromatograms estimated from thin-layer chromatography data.

Justin D Fair1, Chad M Kormos

  • 1Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Unit 3060, Storrs, CT 06269-3060, USA. justin.fair@uconn.edu

Journal of Chromatography. A
|October 14, 2008
PubMed
Summary
This summary is machine-generated.

A new spreadsheet tool predicts silica gel needs and separation outcomes for flash chromatography. This helps optimize preparative-scale separations, ensuring successful results before running the actual column.

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Area of Science:

  • Analytical Chemistry
  • Chromatography

Background:

  • Flash chromatography is a common technique for compound purification.
  • Optimizing flash chromatography parameters can be time-consuming and resource-intensive.
  • Accurate prediction of separation outcomes is crucial for efficient preparative-scale purification.

Purpose of the Study:

  • To develop a predictive tool for optimizing flash chromatography.
  • To estimate key parameters for preparative separations before column packing.
  • To improve the efficiency and success rate of flash chromatography.

Main Methods:

  • Development of a spreadsheet-based utility.
  • Input of sample mass and Thin-Layer Chromatography (TLC) data.
  • Calculation of silica gel quantity, fraction size, and expected separation degree.

Main Results:

  • The spreadsheet accurately estimates analyte retention volume and band volume.
  • It predicts fraction numbers containing target analytes and resolution between peaks.
  • Provides essential data for selecting optimal preparative separation parameters.

Conclusions:

  • The developed spreadsheet is the first utility to accurately estimate flash chromatography parameters.
  • It enables users to optimize preparative separations proactively.
  • Ensures successful first-time separations, saving time and resources.