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Ionic liquid-modified COF nanosphere for efficient extraction and sensitive detection of bisphenol pollutants
Mengmeng Zhou1, Huina Zhou1, Fulan Jin1
1Henan International Joint Laboratory of Medicinal Plants Utilization, Colleage of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, Henan, China.
Food Chemistry
|September 7, 2025
Summary
A new method uses a special material to detect harmful bisphenols (BPs) in food and water. This advance improves food safety monitoring by finding these endocrine-disrupting contaminants with high sensitivity.
Area of Science:
- Analytical Chemistry
- Materials Science
- Environmental Science
Background:
- Bisphenols (BPs) are endocrine-disrupting contaminants of significant concern.
- Efficient and sensitive detection methods are crucial for food safety monitoring.
Purpose of the Study:
- To develop a novel analytical methodology for sensitive detection of hazardous bisphenols.
- To utilize an ionic liquid-modified covalent organic framework (SCOF-V/IL-5F) for solid-phase extraction and enrichment of BPs.
Main Methods:
- Solid-phase extraction using SCOF-V/IL-5F as an adsorbent.
- Density functional theory (DFT) calculations to understand adsorption interactions.
- Analysis of BPs in water, soil, and lettuce samples.
Main Results:
- High adsorption capacity of SCOF-V/IL-5F for BPs (156.3-232.6 mg g⁻¹).
- Broad linear detection range (0.2-800 ng mL⁻¹) and ultra-low detection limits (0.05-0.1 ng mL⁻¹).
- Excellent recovery rates (82.3-112.2 %) and high precision (RSD 0.6-10.1 %) with negligible matrix effects (<0.2 %).
Conclusions:
- The developed COF-based strategy enables efficient enrichment and trace-level detection of BPs.
- Tailored surface functionalization provides superior selectivity for BPs in complex matrices.
- This method significantly advances sensitive detection for effective food safety monitoring.
