Dispersive Micro-Solid-Phase Extraction Based on Decanoic Acid Coated-Fe₃O₄ Nanoparticles for HPLC Analysis of Phthalate Esters in Liquor Samples.

Unlabelled: A novel, simple and low cost through coating Fe3O4 magnetic nanoparticles (MNPs) with decanoic acid were synthesized. The functionalized MNPs showed excellent dispersibility in aqueous solution and were applied to dispersive micro-solid-phase extraction (D-μ-SPE) followed by high performance liquid chromatographic analysis for 4 phthalate esters (PAEs) including benzyl butyl phthalate (BBP), dicyclohexyl phthalate (DCHP), di-n-butyl phthalate (DBP), and di-n-octyl phthalate (DNOP) from liquor samples. The extraction equilibrium is achieved in 1 min.