title: Selective electrochemical sensing for arsenite using rGO/Fe3O4nanocomposites.
abstract: Herein, we report rGO/Fe3O4nanocomposites (NCs) free from noble metals, synthesized by facile one step chemical reduction method, for electrochemical detection of arsenite in water by square wave anodic stripping Voltammetry (SWASV). The synthesized NCs were characterized for its optical, morphological and structural properties. The NCs modified glassy carbon (GCE), NCs/GCE, electrodes showed a higher sensitivity (0.281μA/ppb) and lower LOD (0.12ppb) under optimized experimental conditions. The proposed NCs/GCE electrodes show no interference towards arsenite species in the presence of common cationic interferants, namely, Cu(II), Pb(II), Ni(II), Co(II), Cd(II), Cr(II), Zn(II), etc. In addition, the proposed electrode demonstrates a good stability, reproducibility and potential practical application in electrochemical detection of arsenite.
authors.affiliation: Academy of Scientific and Innovative Research, Council of Scientific and Industrial Research (AcSIR), New Delhi, India; Central Scientific Instruments Organisation, Sector-30 C, Chandigarh 160030, India. Electronic address: poojaiitr@csio.res.in.
authors.forename: Pooja
authors.initials: P
authors.lastname: Devi
authors.affiliation: Central Scientific Instruments Organisation, Sector-30 C, Chandigarh 160030, India.
authors.forename: Chhavi
authors.initials: C
authors.lastname: Sharma
authors.affiliation: Central Scientific Instruments Organisation, Sector-30 C, Chandigarh 160030, India.
authors.forename: Praveen
authors.initials: P
authors.lastname: Kumar
authors.affiliation: Division of Physics of Energy Harvesting, National Physical Laboratory, New Delhi, India.
authors.forename: Mahesh
authors.initials: M
authors.lastname: Kumar
authors.affiliation: Central Scientific Instruments Organisation, Sector-30 C, Chandigarh 160030, India. Electronic address: csiobabankumar@gmail.com.
authors.forename: Baban K S
authors.initials: BKS
authors.lastname: Bansod
authors.affiliation: Central Scientific Instruments Organisation, Sector-30 C, Chandigarh 160030, India.
authors.forename: Manoj K
authors.initials: MK
authors.lastname: Nayak
authors.affiliation: Central Scientific Instruments Organisation, Sector-30 C, Chandigarh 160030, India.
authors.forename: Madan L
authors.initials: ML
authors.lastname: Singla
keywords: Arsenite; Nanocomposites; Stripping voltammetry; rGO/Fe(3)O(4)