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Related Concept Videos

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...
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,...
Chromatographic Methods: Classification01:12

Chromatographic Methods: Classification

Chromatographic techniques are classified in three ways: the classification is based on the physical state of the stationary and mobile phases, how the mobile phase and the stationary phase contact each other, or through the chemical or physical processes that isolate the components of the sample. Typically, the mobile phase is either a liquid or gas, while the stationary phase is either a solid or a liquid layer applied to a solid surface.
Chromatographic techniques are typically named by...
High-Performance Liquid Chromatography: Introduction01:11

High-Performance Liquid Chromatography: Introduction

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:
Optimizing Chromatographic Separations01:15

Optimizing Chromatographic Separations

Optimizing chromatographic separations is crucial for obtaining clean separations in a minimum amount of time. Optimization is required for several factors, including kinetic effects related to band broadening, plate height, capacity factor, and separation factor.
Band broadening refers to spreading solute bands as they travel through the column. This broadening can impact resolution. Plate height (H) represents the length required for one theoretical plate. A lower plate height corresponds to...
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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Detection of Regulated Ergot Alkaloids in Food Matrices by Liquid Chromatography-Trapped Ion Mobility Spectrometry-Time-of-Flight Mass Spectrometry
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Guidelines for bioanalytical 2D chromatography method development and implementation.

Dwight R Stoll1

  • 1Gustavus Adolphus College, Saint Peter, MN 56082, USA. dstoll@gustavus.edu

Bioanalysis
|November 19, 2010
PubMed
Summary
This summary is machine-generated.

Two-dimensional (2D) chromatography offers powerful bioanalysis capabilities for complex mixtures. This review addresses challenges and best practices for developing effective 2D separation methods, aiming for wider adoption.

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Untargeted Metabolomics from Biological Sources Using Ultraperformance Liquid Chromatography-High Resolution Mass Spectrometry (UPLC-HRMS)

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Area of Science:

  • Analytical Chemistry
  • Biochemistry
  • Separation Science

Background:

  • Two-dimensional (2D) chromatography is a powerful technique for analyzing complex biological mixtures.
  • Significant advancements in separation theory, instrumentation, and data analysis have enhanced its capabilities.
  • Current high performance is often limited to expert users due to practical challenges.

Purpose of the Study:

  • To review the challenges in developing 2D chromatographic methods for bioanalysis.
  • To provide best practices for designing effective 2D separations.
  • To facilitate broader adoption of 2D chromatography by practitioners.

Main Methods:

  • Review of current literature on 2D chromatography in bioanalysis.
  • Identification of key challenges in method development.
  • Compilation of best practices and guidance for users.

Main Results:

  • 2D chromatography can resolve hundreds of peaks in complex biological samples within practical timeframes.
  • Widespread adoption is hindered by limitations in instrument accessibility and data analysis.
  • Effective method development requires addressing specific challenges in separation design.

Conclusions:

  • Despite its power, 2D chromatography faces practical hurdles for general use.
  • Addressing method development challenges and providing user guidance is crucial for expanding its application.
  • Standardization and improved data handling are key to unlocking the full potential of 2D separations in bioanalysis.