The determination of 11 sulfonamide antibiotics in water and foods by developing a N-rich magnetic covalent organic framework combined with ultra-high performance liquid chromatography-tandem mass spectrometry

A type of magnetic COF with exposed N-containing groups acting as adsorption sites was designed and synthesized. The magnetic COF was combined with UPLC-MS/MS to establish a rapid method for the determination of 11 SAs residues in samples.