探索新一代的双金属磁离子液体,在微提取过程中具有超低粘度,可与高性能液态染色学直接合
Raúl González-Martín1, Sirintorn Jullakan2, María J Trujillo-Rodríguez1
1Laboratorio de Materiales para Análisis Químico (MAT4LL), Departamento de Química, Unidad Departmental de Química Analítica, Universidad de La Laguna (ULL), 38206, San Cristóbal de La Laguna, Spain; Unidad de Investigación de Bioanalítica y Medio Ambiente, Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias (IUETSP), ULL, 38206, San Cristóbal de La Laguna, Spain.
Analytica chimica acta
|March 29, 2024
概括
研究人员开发了新的,低粘度的双金属磁离子液体 (MILs),以更快地准备样品. 这种方法简化了尿液中致癌生物标志物的分析,而不需要额外的溶剂或反取步骤.
科学领域:
- 分析化学 分析化学
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 双金属磁性离子液体 (MILs) 提供了更好的磁性易感性,以便在分析样品制备中更容易分离.
- 现有的基于MIL的微提取方法具有高粘度,需要分散性溶剂和繁的逆向提取步骤.
研究的目的:
- 为增强微提取引入新一代超低粘度双金属MIL的新一代.
- 开发一种使用这些新型MIL的简化分散液-液微提取 (DLLME) 方法.
- 为了使MIL-DLLME与HPLC光检测的直接合,而无需反向提取.
主要方法:
- 使用的超低粘度双金属MILs由偏磁Mn (II) 复合物组成.
- 在不需要分散溶剂或NaCl的情况下采用分散液-液微提取 (DLLME).
- 直接与高性能液态染色学 (HPLC) 和光检测 (FD) 集成了MIL-DLLME程序.
主要成果:
- 在人类尿液中成功确定了五种单氧化多环芳 (致癌生物标志物).
- 优化条件涉及低MIL体积 (75μL) 和短提取时间 (5分钟).
- 实现了低检测极限 (低至7.50 ng L-1),高丰富系数 (> 17) 和良好的可重现性 (RSD <11%).
结论:
- 本研究介绍了第一个使用低粘度双金属MILs的液相微提取方法.
- 拟议的MIL-DLLME方法消除了对分散溶剂和繁的反取步骤的需求.
- 该方法简单,快速,节能,适合直接注入HPLC系统.
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