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相关概念视频

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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Optimizing Chromatographic Separations01:15

Optimizing Chromatographic Separations

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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...
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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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High-Performance Liquid Chromatography: Instrumentation00:57

High-Performance Liquid Chromatography: Instrumentation

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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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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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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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相关实验视频

Updated: Jul 17, 2025

Curtain Flow Column: Optimization of Efficiency and Sensitivity
06:44

Curtain Flow Column: Optimization of Efficiency and Sensitivity

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复杂梯度的计算机驱动优化在全面的二维液态色谱中.

Stef R A Molenaar1, Tijmen S Bos2, Jim Boelrijk3

  • 1van 't Hoff Institute for Molecular Sciences, Analytical Chemistry Group, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands; Centre for Analytical Sciences Amsterdam (CASA), Amsterdam, The Netherlands.

Journal of chromatography. A
|August 28, 2023
PubMed
概括

一个开源算法自动化了复杂的梯度方法开发,用于全面的二维液态色谱-质谱 (LC x LC-MS). 这种方法显著提高了分离质量和预测准确性,减少了对用户专业知识的依赖.

关键词:
这就是2D-LC.自动化 自动化 自动化方法开发方法的开发方法.保持模式的建模.移动梯度的变化 梯度的变化

更多相关视频

Author Spotlight: Integrating 2D-HPLC-MS and Molecular Networking in Natural Medicine Analysis
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Author Spotlight: Integrating 2D-HPLC-MS and Molecular Networking in Natural Medicine Analysis

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Large Scale Non-targeted Metabolomic Profiling of Serum by Ultra Performance Liquid Chromatography-Mass Spectrometry UPLC-MS
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Large Scale Non-targeted Metabolomic Profiling of Serum by Ultra Performance Liquid Chromatography-Mass Spectrometry UPLC-MS

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相关实验视频

Last Updated: Jul 17, 2025

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Author Spotlight: Integrating 2D-HPLC-MS and Molecular Networking in Natural Medicine Analysis
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Large Scale Non-targeted Metabolomic Profiling of Serum by Ultra Performance Liquid Chromatography-Mass Spectrometry UPLC-MS
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科学领域:

  • 分析化学 分析化学
  • 染色体学 染色体学 是一种染色学.
  • 质谱测量质量谱测量

背景情况:

  • 针对全面的二维液态色谱 (LC x LC) 的方法开发是复杂的,原因是维度间的依赖性和复杂的梯度配置.
  • 传统的"试错"方法耗时,严重依赖用户体验.

研究的目的:

  • 开发一个开源的算法,用于自动化和解释的方法开发复杂的梯度在LCxLC质谱 (MS).
  • 创建一个闭环工作流,使LC x LC-MS系统和数据处理计算机之间能够进行无监督的交互.

主要方法:

  • 开发了一种开源算法,用于自动化LC x LC-MS方法开发.
  • 实现了一个闭环系统,用于仪器和数据处理之间的直接相互作用.
  • 研究了保留模型,在二维中移动梯度和峰值宽度预测.
  • 使用基于分辨率和分析时间的客观函数,对单克隆抗体的三性消化物进行了算法测试.

主要成果:

  • 与通用方法相比,该算法在仅经过四次代后改善了分离质量.
  • 进一步的代提高了保留时间和峰值宽度预测的准确性.
  • 证明了算法的优化LC x LC-MS中的复杂梯度配置的能力.

结论:

  • 开发的算法为LC x LC-MS中复杂的梯度优化提供了一个自动化和高效的解决方案.
  • 这种方法减少了方法开发所需的时间和专业知识.
  • 该算法提高了复杂色谱分析的分离性能和预测准确性.