The use of magnetic nanoparticles in sample preparation devices and tools

Abstract

Magnetic nanoparticles show excellent features such as small size, high surface area, active surface that can successfully be modified, low toxicity, and superparamagnetism. These unique features of magnetic nanoparticles make them excellent candidates for the design and fabrication of new functional nanomaterials for the solid-phase extraction processes. Magnetic nanoparticles are directly dispersed in the sample solutions for quick extraction of the target compound/s, as they can be readily recovered by a magnet, which overcomes drawbacks of the conventional adsorbent materials such as time consumption and large volume of samples. This chapter aims to describe and highlight the latest developments in design and preparation of novel magnetic nanoparticles. The methodologies for the synthesis of these nanoparticles, as well as their potential use in the selective extraction of the target compound/s from complex samples (i.e., environmental, biological, food and beverage samples) are demonstrated. © 2020 Elsevier Inc. All rights reserved.