Fabrication of Magnetic Nano-Fe3O4chitosan/Graphene Oxide sorbents by New Method and Application in Solid Phase Extraction for Preconcentration of Mo (II)

A novel, simple, sensitive and effective method has been developed for Preconcentration of Mo (II) on magneticnano-Fe3O4chitosan/graphene oxide solid-phase extraction adsorbent. A novel method applied a solid phase extraction (SPE) dispersive with magneticnano-Fe3O4chitosan/graphene oxide sorbent was established for the Preconcentration of trace quantities of Mo (II) and was identified by flame atomic absorption spectrometry (FAAS). Some of the significant factors were nominated and optimized. Through the optimized circumstances the boundary of detection (LOD) and boundary of quantification (LOQ) were 49.6, 163.7 ng L-1 and the offered method has a good reproducibility 0.90% (RSD %). The enrichment factor was 200 and the percentage of recovery was in the range of 97-100% .The technique was effectively used to for recovering the Mo (II) in several kinds of water samples.

Keywords: magneticnano-Fe3O4chitosan/graphene oxide, Preconcentration, SPE, Preconcentration, FAAS, Mo (II).