Open AccessPreparation of NiO-graphene oxide nanosensor for adsorptive stripping voltammetric determination of dinoterbon in food samples
Author(s) -
Kasaram Roja,
P. Reddy Prasad,
Punyasamudram Sandhya,
N. Y. Sreedhar
Publication year - 2016
Publication title -
journal of electrochemical science and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.236
H-Index - 6
ISSN - 1847-9286
DOI - 10.5599/jese.307
Subject(s) - detection limit , stripping (fiber) , chemistry , nanosensor , cyclic voltammetry , analytical chemistry (journal) , voltammetry , adsorptive stripping voltammetry , cathodic stripping voltammetry , nuclear chemistry , electrochemistry , chromatography , materials science , electrode , nanotechnology , composite material
Graphene oxide (GO) modified NiO electrochemical nanosensor was developed for the determination of the dinoterbon in food samples using adsorptive stripping voltammetry. The modified nanosensor characterized by TEM, XRD, cyclic and adsorptive stripping voltammetry. Dinoterbon pesticide exhibited a single well-dened cathodic peak at pH 4.0 at Britton–Robinson buffer (-810.0 mV). The voltammetric characterization of the pesticide residues is evaluated and the parameter such as the effect of pH, scan rate, pulse amplitude, deposition potential and deposition time were optimized. The current–concentration plot obtained using this peak was straight-lined over the range from 0.05 to 50.00 µg mL-1 with limit of detection (LOD) 0.028 µg mL-1. The proposed method was efficiently applied to the determination of dinoterbon in food samples. The mean recoveries of the pesticide 97.40 to 99.88 % with a relative standard deviation of 0.114 % in food samples respectively