Melamine supported magnetic iron oxide nanoparticles (Fe3O4@Mel) for spectrophotometric determination of malachite green in water samples and fish tissues

Abstract

This paper presents a feasible protocol for the preparation of melamine conjugated Fe3O4 magnetic nanoparticles. The application of this magnetic nanocomposite as a novel and sensitive solid phase for removal, preconcentration and spectrophotometric determination of trace amount of malachite green (MG) was developed. Combination of nanocomposite adsorption and easily magnetic separation was used to extraction of MG. The calibration graph was linear in the range 0.1–8μgmL−1 of MG. The detection limit of the method for determination of MG was 0.05μgmL−1 with a relative standard deviation less than 1.66%.