Superhydrophobic magnetic nanoparticle-free fatty acid regenerated from waste cooking oil for the enrichment of carcinogenic polycyclic aromatic hydrocarbons in sewage sludges and landfill leachates

In this study, Fe 3 O 4 nanoparticles grafted with superhydrophobic free fatty acids from waste cooking oil ( FFA@MNP ) were successfully fabricated as an adsorbent for the magnetic solid phase extraction (MSPE) technique.