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Related Concept Videos

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

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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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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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Supercritical Fluid Chromatography01:18

Supercritical Fluid Chromatography

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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,...
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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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Chromatographic Methods: Terminology01:18

Chromatographic Methods: Terminology

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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,...
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Updated: Nov 19, 2025

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Towards spatial comprehensive three-dimensional liquid chromatography: A tutorial review.

Thomas Themelis1, Ali Amini1, Jelle De Vos1

  • 1Vrije Universiteit Brussel (VUB), Department of Chemical Engineering, Brussels, Belgium.

Analytica Chimica Acta
|January 31, 2021
PubMed
Summary
This summary is machine-generated.

Spatial comprehensive three-dimensional chromatography (3D-LC) offers enhanced resolving power by utilizing a 3D separation space. This innovative approach overcomes limitations of conventional methods by developing separation stages in parallel, boosting peak capacity and production rate.

Keywords:
3D-LCElectrophoresisMicrofluidicsMulti-dimensional separationsSpatial liquid chromatography

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Area of Science:

  • Analytical Chemistry
  • Separation Science
  • Chromatography

Background:

  • Conventional multi-dimensional chromatography faces limitations due to sequential analysis of fractions.
  • Achieving higher resolving power is crucial for complex sample analysis.

Purpose of the Study:

  • To introduce and discuss spatial comprehensive three-dimensional chromatography (3D-LC).
  • To highlight the potential of 3D-LC for unprecedented resolving power and efficiency.

Main Methods:

  • Utilizing a three-dimensional separation space for component separation.
  • Incorporating orthogonal retention mechanisms to maximize peak capacity.
  • Developing second- and third-dimension separation stages in parallel.

Main Results:

  • Spatial 3D-LC achieves unprecedented resolving power.
  • Maximum peak capacity is the product of individual dimension capacities with orthogonal mechanisms.
  • Parallel development of separation stages overcomes sequential analysis limitations.

Conclusions:

  • Spatial comprehensive 3D-LC presents a significant advancement in chromatographic separation.
  • The technology offers prospects for enhanced peak capacity and production rates.
  • Chip design considerations are vital for establishing spatial 3D-LC analysis.