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Gas Chromatography-Mass Spectrometry Paired with Total Vaporization Solid-Phase Microextraction as a Forensic Tool
Published on: May 25, 2021
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Supramolecularly imprinted polymeric solid phase microextraction coatings for synergetic recognition nitrophenols and
Yuanchen Liu1, Yujian Liu2, Zhimin Liu2
1Faculty of Science, Kunming University of Science and Technology, Kunming 650500, PR China; State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong 999077, PR China.
Journal of Hazardous Materials
|January 28, 2019
Summary
This study introduces novel supramolecularly imprinted polymeric (SMIP) coatings for enhanced extraction of nitrophenols and bisphenol A. These advanced materials utilize β-cyclodextrin functional monomers for superior selective recognition in complex samples.
Area of Science:
- Analytical Chemistry
- Materials Science
- Environmental Science
Background:
- Developing selective and sensitive extraction methods is crucial for environmental monitoring.
- Nitrophenols and bisphenol A are common environmental contaminants requiring efficient detection.
- Molecular imprinting and supramolecular chemistry offer promising avenues for advanced separation materials.
Purpose of the Study:
- To design and synthesize novel supramolecularly imprinted polymeric (SMIP) solid-phase microextraction (SPME) coatings.
- To investigate the synergetic recognition capabilities of these SMIPs for nitrophenols and bisphenol A.
- To evaluate the performance of SMIPs in extracting target analytes from real water samples.
Main Methods:
- Synthesis of β-cyclodextrin (β-CD) derivatives as supramolecular functional monomers.
- Fabrication of SMIPs SPME coatings using molecular imprinting techniques.
- Analysis of inclusion effects using UV-vis spectroscopy and theoretical calculations.
- Extraction and detection of 4-nitrophenol (4-NP) in real water samples.
Main Results:
- Four SMIP SPME coatings demonstrated good selectivity for target templates, enabling 4-NP extraction from real water.
- β-CD-4 exhibited the strongest intermolecular forces and electronic interactions with 4-NP, confirmed by UV-vis spectra and theoretical calculations.
- The developed polymers combined inclusion interactions from β-cyclodextrin cavities and hydrogen-bonding from imprinting, leading to synergetic recognition.
- SMIPs achieved highly selective recognition in complex real water samples with sensitive detection limits.
Conclusions:
- The novel SMIPs coatings exhibit excellent selectivity and sensitivity for nitrophenols and bisphenol A.
- Synergetic recognition mechanisms involving inclusion and hydrogen-bonding interactions enhance extraction efficiency.
- These SMIPs are promising for the selective analysis of environmental pollutants in complex matrices.
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