Speciation analysis of Mn(II)/Mn(VII) using FeO@ionic liquids-β-cyclodextrin polymer magnetic solid phase extraction coupled with ICP-OES.

Ionic liquids-β-cyclodextrin polymer (ILs-β-CDCP) was attached on FeO nanoparticles to prepare magnetic solid phase extraction agent (FeO@ILs-β-CDCP). The properties and morphology of FeO@ILs-β-CDCP were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction(XRD), size distribution and magnetic analysis. A new method of magnetic solid phase extraction (MSPE) coupled to ICP-OES for the speciation of Mn(II)/Mn(VII) in water samples was established.