用三级氨基功能化的金属有机框架,用于在环境水样中高吸附 perfluoroalkyl 和 polyfluoroalkyl 物质
Zhuoning Li1, Xiaoli Wang1, Leilei Wang2
1College of Environmental Science and Engineering, Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
Journal of chromatography. A
|April 6, 2025
概括
新的金属有机框架 (MOF) 通过固相提取有效检测微量基和多基物质 (PFAS). 这一进步改善了对这些持久化学品的环境监测和风险评估.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
背景情况:
- 对于评估环境和健康风险而言,对对和多基物质 (PFAS) 的敏感监测至关重要.
- 现有的PFAS检测方法在灵敏度或效率上可能受到限制.
- 开发新型吸附材料是改善新出现污染物的微量分析的关键.
研究的目的:
- 为了合成和描述一种新的功能化的金属有机框架 (MOF),用于增强PFAS的吸附.
- 开发和验证一种敏感的分析方法,用于环境水样中的微量PFAS测定.
- 评估基于MOF的新固体相提取 (SPE) 方法对PFAS分析的性能.
主要方法:
- 一合成UiO-67-CH2-N(CH3) 2 ,集成MOF组合和还原性氨基化.
- 合成的MOF作为固相提取 (SPE) 中的吸附材料的应用.
- 开发一种SPE与高性能液体染色学-双重质谱学 (HPLC-MS/MS) 结合在一起,用于PFAS量化.
主要成果:
- UiO-67-CH2-N(CH3) 2通过静电吸引和结合来推动PFAS的异常吸附性能.
- 该SPE-HPLC-MS/MS方法实现了低检测极限 (0.02-0.88 ng·L−1) 和高精度 (RSD <8.18%).
- 在环境水域中有效分析PFAS,在增样本中回收率高 (84.0-117%).
结论:
- 功能化的UiO-67-CH2-N(CH3) 2是一种用于微量PFAS分析的高效吸附剂.
- 开发的SPE-HPLC-MS/MS方法为PFAS的环境监测提供了一种敏感和可靠的方法.
- 这项研究促进了针对环境污染物的分析和风险评估中量身定制的MOF的应用.
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