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Related Concept Videos

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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High-Performance Liquid Chromatography: Elution Process01:05

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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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High-Performance Liquid Chromatography: Introduction01:11

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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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Updated: Oct 8, 2025

Simple In-House Ultra-High Performance Capillary Column Manufacturing with the FlashPack Approach
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High Throughput UHPLC-MS-Based Lipidomics Using Vacuum Jacketed Columns.

Robert S Plumb1, Giorgis Isaac1, Paul D Rainville1

  • 1Scientific Operations, Waters Corporation, IMMERSE, Cambridge, Massachusetts 02142, United States.

Journal of Proteome Research
|December 30, 2021
PubMed
Summary
This summary is machine-generated.

Vacuum jacketed columns (VJC) enhance lipidomic analysis by improving resolution and speed in liquid chromatography-mass spectrometry (LC-MS). This advanced technique increases lipid detection and identification in biological samples.

Keywords:
NIST 1950 plasmagefitinibhigh-throughputlipidomicsmouse plasma

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Area of Science:

  • Analytical Chemistry
  • Biochemistry
  • Mass Spectrometry

Background:

  • Reversed-phase ultra-high-performance liquid chromatography-mass spectrometry (UHPLC-MS) is crucial for lipidomics, but conventional systems face limitations.
  • Dispersion from fluidic connections and thermal gradients in LC columns hinder chromatographic performance and throughput.

Purpose of the Study:

  • To evaluate the efficacy of vacuum jacketed columns (VJC) for lipidomic analysis of plasma extracts.
  • To compare VJC performance against conventional UHPLC methods in terms of resolution, speed, and lipid detection.

Main Methods:

  • Lipidomic analysis of plasma extracts using vacuum jacketed columns (VJC) positioned at the mass spectrometer source.
  • Comparison of VJC-based methods with conventional UHPLC, analyzing metrics like peak capacity, peak tailing, peak intensity, and lipid identification.

Main Results:

  • VJC methods demonstrated significantly greater resolution, faster analysis times, and improved peak intensity compared to conventional UHPLC.
  • A 5-minute VJC analysis showed a 66% increase in peak capacity, up to 34% reduction in peak tailing, and a 30% increase in detected lipids.
  • VJC resulted in a 2-fold increase in peak intensity and a 22% increase in identified lipids due to improved spectral quality.

Conclusions:

  • Vacuum jacketed columns offer superior performance for lipidomic analysis, overcoming limitations of conventional UHPLC systems.
  • VJC technology enhances chromatographic separation, leading to more comprehensive and reproducible lipid profiling in biological samples like plasma.