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Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
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Fabrication of a Dipole-assisted Solid Phase Extraction Microchip for Trace Metal Analysis in Water Samples
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有效的磁性吸附剂,用于从水样中提取双A.

Abdullah Alhendal1, Jessy Shiju1, Zahoor Ahmad1

  • 1Department of Chemistry, Kuwait University P. O. Box 5969 Safat 13060 Kuwait abdullah.alhendal@ku.edu.kw.

RSC advances
|December 8, 2025
PubMed
概括

新的磁性聚合物吸附剂通过磁性固相提取 (MSPE) 从水中有效提取双A (BPA). 用碳纳米管增强的MPCNT吸附剂显示出卓越的BPA吸收和方法可重复性,用于环境分析.

科学领域:

  • 环境化学环境化学
  • 分析化学 分析化学
  • 材料科学 材料科学 材料科学

背景情况:

  • 双甲 (BPA) 是一种在水溶液中发现的内分泌干扰化学物质,需要有效的检测和去除方法.
  • 磁性固相提取 (MSPE) 为从复杂矩阵中分离和缩分析物提供了一个有前途的技术.
  • 开发具有增强吸附能力的新型磁性吸附剂对于提高BPA提取效率至关重要.

研究的目的:

  • 合成和描述用于提取双A (BPA) 的新型磁性聚合物吸附剂.
  • 为了评估这些吸附剂的性能,使用磁性固相提取 (MSPE) 与HPLC-UV相结合.
  • 优化提取条件并评估方法的BPA测定分析性能.

主要方法:

  • 两种磁性聚合物吸附剂,MPCNT和MPTCl,通过修改聚甲基 (PDMS) 与3-aminopropyltriethoxysilane (APTS) 合成,并在MPCNT中结合了碳素功能化的多壁碳纳米管 (MWCNT-COOH).
  • 使用包括XPS,泽塔潜力,FT-IR,TGA,SEM,AFM和TEM在内的技术进行了MPCNT吸附剂的广泛表征.
  • 优化MSPE参数,如聚合物含量,pH值,样品体积和盐分效应,以最大限度地提取BPA.

主要成果:

  • 含有MWCNT-COOH的MPCNT吸附剂由于改善的π-π相互作用,键和疏水域,显著增强了BPA吸附.

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  • 使用MPCNT优化的MSPE方法表现出良好的可重现性,相对标准偏差 (RSD) 为7.85%.
  • 该方法实现了优异的线性 (r2 = 0.9992) 检测极限 (LOD) 为 15.15 μg L-1 和量化极限 (LOQ) 为 50.00 μg L-1.1.

    • 结论:

    • 开发的磁性聚合物吸附剂 (MPCNT) 对于从水溶液中提取双A (BPA) 是非常有效的.
    • 与HPLC-UV相结合的MSPE方法为BPA确定提供了灵敏,可重复和高效的分析工具.
    • 这种方法具有环境监测和评估水样中的BPA污染的潜力.