Polycyclic Aromatic Hydrocarbons Extraction Based on Graphene Coated Magnetic Alloy Nanoparticles

Abstract

In this paper we reported on a new promising nanosorbent constituted by core-shell few layer graphene coated metal nanoparticles (G-FeCo). It combines the superparamagnetism of the FeCo alloy and the strong adsorption ability of the carbon materials to give a direct excellent absorption efficiency and rapid separation. Two PAHs as model analytes, fluoranthene and anthracene, were determined by the combination of magnetic solid phase extraction (MSPE) and GC-MS analysis. Limits of detection of PAHs were found for analytes solutions in the linear range of 2-200 ng l^-1. The accuracy of the method was evaluated by the recoveries of spiked samples. Very good recoveries was achieved with G-FeCo. Our results proved that the present approach is sensitive and efficient for the extraction of PAHs traces. This simple method provided a very high extraction efficiency and short analysis times.