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Analyte Adsorption and Distribution01:09

Analyte Adsorption and Distribution

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In certain chromatographic separations, solutes transfer between the mobile phase and the stationary phase via sorption, which typically refers to the process of adsorption. For many chromatographic systems, the sorption process often depends on the polarity of the compounds—an expression of the overall dipole moment within the molecule. During the separation process, there is competition between the solute and solvent for adsorption to the stationary phase. Highly polar compounds and...
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High-Performance Liquid Chromatography: Types of Detectors01:15

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The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte...
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Ion-Exchange Chromatography01:09

Ion-Exchange Chromatography

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Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
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Supercritical Fluid Chromatography01:18

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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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Capillary Electrophoresis: Applications01:30

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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.
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Detection of Regulated Ergot Alkaloids in Food Matrices by Liquid Chromatography-Trapped Ion Mobility Spectrometry-Time-of-Flight Mass Spectrometry
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基于纤维素的智能吸收剂用于光驱动的固体相提取安非他胺.

Yuhong Xie1, Rui Zhang1, Yifan Liu1

  • 1College of Environment & Safety Engineering, Fuzhou University, Fuzhou, Fujian 350108, China.

Langmuir : the ACS journal of surfaces and colloids
|February 27, 2026
PubMed
概括
此摘要是机器生成的。

一种基于纤维素的新型吸附剂 (Cell-Azo) 能够通过光控制的固体相提取安非他命 (AMP). 这种智能材料在尿液等复杂样品中提供高效,绿色和可控制的痕量AMP分析.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 分析化学 分析化学
  • 聚合物化学 聚合物化学

背景情况:

  • 开发有选择性和高效的吸附剂材料对于微量分析物的提取至关重要.
  • 响应光的材料提供了用于控制捕获和释放的新机制.
  • 现有的安非他胺分析方法可能是复杂和耗时的.

研究的目的:

  • 开发一种对光敏感的纤维素基吸附剂 (Cell-Azo) 用于胺胺 (AMP) 固体相提取.
  • 为了研究Cell-Azo的吸附和光触发脱吸特性.
  • 建立一种敏感的分析方法,用于复杂矩阵中的痕迹AMP检测.

主要方法:

  • 通过原子转移激素聚合,将亚博烯移植到纤维素上,以制造Cell-Azo.
  • 使用FT-IR,XPS和UV-vis光谱学进行表征.
  • 批量吸附研究和分散固相提取 (d-SPE) 协议的开发与HPLC-UV相结合.

主要成果:

  • 细胞-Azo证明了成功的移植和光诱导的可逆异构化.
  • 在pH值9.0的情况下,最大吸附能力为19.86 mg·g−1.
  • 紫外线光激发AMP释放,其脱吸效率为90.54%,明显高于在黑暗中.
  • 该d-SPE-HPLC-UV方法显示了广泛的线性,低的LOD (7μg·L-1),以及良好的精度.
  • 尖尿样中的康复率在69.53-75.68%之间.

结论:

  • 细胞-Azo是一种有效的智能吸收剂,用于AMP的光驱固相提取.
  • 光控制释放机制在传统方法上提供了显著的优势.
  • 在复杂的生物样本中,Cell-Azo为微量AMP分析提供了一个有希望的绿色和可控制的替代方案.