Monitoring paracetamol levels in environmental samples is essential, as this widely used pharmaceutical can degrade water quality and adversely affect both ecosystems and human health. To address this issue, a novel, simple, sensitive, and accurate method has been developed. This method employs a functionalized ionic liquid, 2-(4-hydroxybenzyl)hydrazinium chloride ([HBH][Cl]), specifically designed to structurally mimic paracetamol and function as a complexing agent. Following strong interactions between the ionic liquid and paracetamol in aquatic samples, the ionic liquid is magnetized and then separated using a magnetic field. The synthesis of the magnetic ionic liquid was confirmed using a variety of analytical techniques, including Fourier-transform infrared spectroscopy, carbon and proton nuclear magnetic resonance (