|
Abstract
|
This 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.
|