Magnetic solid-phase extraction using a mixture of two types of nanoparticles followed by gas chromatography-mass spectrometry for the determination of six phthalic acid esters in various water samples

Abstract

A mixture of Fe3O4@MIL-100 and Fe3O4@SiO2@polythiophene nanoparticles exhibit high extraction efficiency for PAEs in water.

Magnetic covalent organic frameworks for rapid solid-phase extraction of phthalate esters and bisphenol A in beverage samples

“…Effective sample pretreatment is an important means to avoid food matrix interference and improve detection sensitivity. 13,14 In recent years, commonly used pretreatment methods mainly include liquid–liquid extraction (LLE), 15 solid-phase extraction (SPE), 16 solid-phase microextraction (SPME), 17 magnetic solid-phase extraction (MSPE), 18 etc. LLE has a wide range of applications, but it requires large amounts of organic solvents and is a labor-intensive process.…”