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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: 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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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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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.
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柱阵列混合器用于柱后衍生,集成到基于液体染色学的微流体装置中.

Muneki Isokawa1, Kanki Nakanishi2, Takahiro Kanamori1

  • 1Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan.

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一种新的微流体装置集成了一个柱阵列 (PA) 混合器,用于在芯片上液态染色学 (LC) 中增强后列衍生. 这项创新提高了代谢物分析的灵敏度和速度,使得可以快速检测氨基酸.

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科学领域:

  • 分析化学 分析化学
  • 微流体学 微流体学
  • 生物技术是生物技术.

背景情况:

  • 化学衍生对于提高微流体装置的代谢物分析灵敏度和选择性至关重要.
  • 将衍生单位集成到微流体色谱系统中,带来了重大发展挑战.

研究的目的:

  • 为芯片上液态染色学 (LC) 开发一种新的微流体衍生化单元.
  • 为了提高混合效率,使用支柱阵列 (PA) 混合器进行后列衍生.
  • 为了证明该设备的快速代谢物分析能力.

主要方法:

  • 在板上制造具有集成LC柱和PA混合器的微流体设备.
  • 利用计算流体动力学 (CFD) 进行概念验证.
  • 进行了液体实验,比较PA混合器与空洞通道混合器.
  • 使用水友互动色谱 (HILIC) 分析的氨基酸与后列导化和光检测相结合.

主要成果:

  • 该PA混合器有效地增强了衍生试剂和分析物的横向混合.
  • 分析剂的峰值宽度没有被PA混合器增加,保持了分离效率.
  • 在40秒内实现了三种氨基酸的快速分析.
  • 通过使用纳夫他林-2,3-二二甲证明了成功的后列化衍生.

结论:

  • 开发的PA混合器在微流体LC系统中有效用于后列衍生.
  • 集成衍生单位显示出创建先进微总分析系统 (μTAS) 的巨大潜力.
  • 这种方法促进了敏感和选择性的生物分析,具有高吞吐量.