Title of article :
ZnO Nanoparticle Modified Carbon Paste Electrode as a Sensor for Electrochemical Determination of Tert-Butylhydroquinone in Food Samples
Author/Authors :
Rahmanpour, Mahbobe S Department of Food Science - Sari Branch - Islamic Azad University , Khalilzadeh, Mohammad A Department of Food Science - Sari Branch - Islamic Azad University
Abstract :
A fast response voltammetric sensor based on ZnO nanoparticles (ZnO/NPs) carbon paste electrode (ZnO/NPs/CPE) is suggested for the determination of tert-butylhydroquinone in the aqueous buffer solution. ZnO nanoparticles synthesized by direct chemical precipitation method and characterized with X-ray diffraction (XRD) method. In the second step, application of the ZnO/NPs for the preparation of modified carbon paste electrode was investigated. At the optimum condition (pH 7.0), the oxidation signals of tert-butylhydroquinone increased linearly with its concentration in the ranges of 1.0–750 μM. The detection limit for tert-butylhydroquinone was 0.7 μM. The ZnO/NPs/CPE was used for the determination of tert-butylhydroquinone in food samples such as sesame and soybean oil
Keywords :
Tert-butylhydroquinone , ZnO nanoparticles , Food sample analysis , Modified electrode
Journal title :
Astroparticle Physics
