相关实验视频
Updated: Sep 9, 2025

06:44
Curtain Flow Column: Optimization of Efficiency and Sensitivity
Published on: June 12, 2016
6.6K
基于通用模型的逆相液体染色学染色性能描述. 第二部分:连续列合的预测
P Peiró-Vila1, M Blázquez-Mateu1, J R Torres-Lapasió1
1Department of Analytical Chemistry, Faculty of Chemistry, Universitat de València, Avda. Vicent Andrés Estellés s/n, 46100 Burjassot, Spain.
Journal of chromatography. A
|September 4, 2025
概括
连续列合通过结合不同的静止相来增强色谱分离. 一般化化模型 (GEM) 有效地预测这些混合系统中的保留和选择性变化.
科学领域:
- 分析化学
- 染色学
背景情况:
- 使用C18列的逆相液体染色学 (RPLC) 是标准的,但选择性有限.
- 连续列合提供了一种提高分离性能和缩短分析时间的策略.
研究的目的:
- 研究三种不同的静止相 (C18,基,基) 的连续合.
- 评估使用合列的15种不同极性的硫胺的分离.
- 评估传统和通用化模型 (GEM) 对于保留和选择性的预测能力.
主要方法:
- 高碳载荷C18,基和基柱的连接.
- 在同位素和梯度化条件下分离15个硫胺.
- 应用个人保留模型和通用化模型 (GEM) 进行性能评估.
主要成果:
- 连续列合显著改变了色谱选择性,导致峰值顺序反转.
- 一般化化模型 (GEM) 准确地预测了合柱系统中的保留行为和选择性变化.
- 混合配置显示了多样化的硫胺组的增强分离能力.
结论:
- 串行列合是增强色谱选择性和分辨率的有效策略.
- 一般化化模型 (GEM) 提供了一个可靠的框架,用于预测和优化复杂列配置中的分离.
- 这种方法有助于合理的列选择和分析分离的方法开发.
相关概念视频
High-Performance Liquid Chromatography: Introduction
2.3K
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:
In HPLC, two phases play a critical role in the separation process:
2.3K
Principles Of Column Chromatography
7.1K
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...
7.1K
Chromatographic Methods: Terminology
2.5K
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,...
2.5K
Chromatography: Introduction
4.6K
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...
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...
4.6K
Silica Gel Column Chromatography: Overview
1.7K
Silica gel column chromatography is a technique for separating compounds using a column packed with silica gel as the stationary phase. This method relies on differences in the polarity of compounds. Based on their polarities, compounds move between the stationary phase (silica gel) and the mobile phase (the solvent), forming discrete bands in the column.
Polar components tend to bind strongly to the silica gel, causing them to move slowly through the column. In contrast, nonpolar compounds...
Polar components tend to bind strongly to the silica gel, causing them to move slowly through the column. In contrast, nonpolar compounds...
1.7K
High-Performance Liquid Chromatography: Instrumentation
2.0K
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.
2.0K

