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Related Concept Videos

Thin-Layer Chromatography (TLC): Overview01:11

Thin-Layer Chromatography (TLC): Overview

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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...
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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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Ion-Exchange Chromatography01:09

Ion-Exchange Chromatography

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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...
2.7K
Chromatography: Introduction01:10

Chromatography: Introduction

8.2K
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...
8.2K
Chromatographic Methods: Classification01:12

Chromatographic Methods: Classification

4.5K
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...
4.5K
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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Updated: Mar 19, 2026

Chromatographic Fingerprinting by Template Matching for Data Collected by Comprehensive Two-Dimensional Gas Chromatography
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[A comment on chiral thin layer chromatography].

Xuexian Chen, Liming Yuan

    Se Pu = Chinese Journal of Chromatography
    |June 21, 2016
    PubMed
    Summary
    This summary is machine-generated.

    This study reviews nine key characteristics of chiral thin layer chromatography (chiral TLC) and its recent advancements. It highlights the enantioselectivity of a commercial chiral TLC plate and the use of vancomycin as a chiral selector.

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    Area of Science:

    • Analytical Chemistry
    • Chromatography

    Context:

    • Chiral separations are crucial in pharmaceutical and chemical industries.
    • Thin layer chromatography (TLC) offers a practical approach for chiral analysis.

    Purpose:

    • To summarize key characteristics of chiral thin layer chromatography based on extensive experimental validation.
    • To review recent progress in the field of chiral TLC.
    • To introduce the enantioselectivity of a commercial chiral TLC plate and explore vancomycin as a chiral selector.

    Summary:

    • Authors identified nine essential characteristics for successful chiral thin layer chromatography through literature experiments.
    • The review covers recent developments and advancements in chiral TLC techniques.
    • Enantioselectivity of a commercial chiral thin layer plate is discussed, alongside the application of vancomycin as a chiral selector.

    Impact:

    • Provides a practical overview of chiral TLC for researchers.
    • Highlights the utility of specific chiral selectors like vancomycin.
    • Aids in the selection and optimization of chiral TLC methods for enantioseparation.