Title of article :
Analysis of Nitrite using a Voltammetric Sensors Employing NiO Nanoparticle Modified Carbon paste Electrode
Author/Authors :
Rudbaraki, Ali Department of Food Science - Sari Branch - Islamic Azad University , Khalilzadeh, Mohammad A Department of Food Science - Sari Branch - Islamic Azad University
Abstract :
A carbon paste electrode modified with NiO nanoparticles (CPE-M-NiO/NPs) was fabricated and used as a high performance sensor for nitrite (NT). CPE-M-NiO/NPs was prepared by mixing NiO/NPs, graphite powder and liquid paraffin together. The CPE-M-NiO/NPs showed electrocatalytic activity to the electro-oxidation of NT, and an irreversible oxidation peak appeared at 0.90 V with improved peak current. The linear response range was found to be 0.8–1100 μM. Detection limit (3σ) of NT was found to be 0.3 μM by square wave voltammetry (SWV) method. The CPE-M-NiO/NPs was successfully applied for the determination of NT in food samples
Keywords :
Nitrite analysis , Modified electrode , NiO nanoparticles , Voltammetry
Journal title :
Astroparticle Physics
