Abstract
ABSTRACTThis study describes a new magnetic solid-phase extraction (MSPE) technique based on Fe3O4/graphene oxide-soluble eggshell membrane protein (Fe3O4/GO-SEP) for accurate measurement of malachite green (MG) residue in various water samples residues by UV-Vis spectroscopy. The morphology of the prepared adsorbent has been studied by scanning electron microscopy and atomic force microscopy in details. Parameters affecting the MSPE were optimised and determined with UV-Vis spectrophotometry thoroughly. Under the optimised extraction circumstances, the introduced method represented a wide linearity over the concentration of 0.5–250 ng mL−1, a high enrichment factor of 83.3 and low detection limit of 0.2 ng mL−1. The prepared Fe3O4/GO-SEP was successfully used for preconcentration and determination of MG in river and fish farming water samples with suitable precision and accuracy.
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