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相关概念视频

Capillary Electrophoresis: Instrumentation01:20

Capillary Electrophoresis: Instrumentation

230
Capillary electrophoresis instrumentation typically consists of several key components. A high-voltage power supply generates the electric field necessary for the separation by connecting to an anode (the positively charged electrode) and a cathode (the negatively charged electrode) located in buffer reservoirs at each end of the capillary tube. The system includes a sample vial, a fused silica capillary tube coated with polyimide for mechanical strength through which the sample components...
230
Capillary Electrophoresis: Applications01:30

Capillary Electrophoresis: Applications

395
Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
395
Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview01:19

Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview

728
In inductively coupled plasma–mass spectrometry (ICP–MS), an inductively coupled plasma (ICP) torch is used as an atomizer and ionizer. Solid samples are dissolved and volatilized before being introduced into the high-temperature argon plasma, while solution samples are nebulized and passed through the high-temperature argon plasma. Plasma dissociates the analytes and ionizes their component atoms to form a mixture of positive ions and molecular species. The positive ions are then...
728
Ion Exchange01:17

Ion Exchange

591
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
591

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相关实验视频

Updated: Jun 28, 2025

On-chip Isotachophoresis for Separation of Ions and Purification of Nucleic Acids
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通过自组装通道进行精密离子分离.

Shanshan Hong1, Maria Di Vincenzo2, Alberto Tiraferri3

  • 1Chemistry Program, Physical Science and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia.

Nature communications
|April 11, 2024
PubMed
概括

研究人员开发了可扩展的纳米过膜,使用宏循环进行精确的分子选. 这些膜显著增强了离子从盐水中回收的性能,超过了现有的技术.

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Merging Ion Concentration Polarization between Juxtaposed Ion Exchange Membranes to Block the Propagation of the Polarization Zone
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科学领域:

  • 材料科学 材料科学 材料科学
  • 化学工程是化学工程的重要组成部分.
  • 环境科学 环境科学

背景情况:

  • 开发选择性膜用于从盐水中回收稀有金属至关重要.
  • 在膜中精确的亚纳米孔控制仍然是一个重大挑战.

研究的目的:

  • 创建一种可扩展的方法,用于制造具有精确分子选能力的纳米过膜.
  • 为了提高膜的选择性,从复杂的水溶液中恢复离子.

主要方法:

  • 在一个多烯酸支层上利用了界面聚凝.
  • 嵌入功能化宏循环,通过超分子相互作用定向.
  • 制造的纳米薄膜具有自组装的通道,具有6.6 Ångström的值.

主要成果:

  • 基于宏循环腔体大小,实现了具有精确分子选能力的膜.
  • 对于离子/离子分离的选择性增加了100倍.
  • 在回收方面表现优于商业和最先进的膜.

结论:

  • 开发的基于宏循环的膜为精确的离子分离提供了可扩展的解决方案.
  • 这些膜显示出从盐水和海水中有效回收的巨大潜力.
  • 这种方法推进了纳米过技术,以回收有价值的元素.