Title of article :
A sensitive electroanalytical sensor amplified with Pd-ZnO nanoparticle for determination of Sunset Yellow in real samples
Author/Authors :
Motahharinia ، Morteza Department of Applied Chemistry - Islamic Azad University, Mashhad Branch , Zamani ، Hassan Ali Department of Applied Chemistry - Islamic Azad University, Mashhad Branch , Karimi-Maleh ، Hassan School of Resources and Environment - University of Electronic Science and Technology of China
Abstract :
In the present study, ZnO nanoparticle doped with Pd (ZnO-Pd) using one simple chemical precipitation method has been synthesized and characterized by different characterization methods. The synthesized nanoparticle presented a nano-size spherical shape with d 50 nm. In continuous, ZnO-Pd as a conductive mediator has been used for modification of paste electrode (PE) in the presence of 1-butyl-3-methylimidazolium hexafluoro phosphate, ([C4mim]-[PF6]) and paraffin oil as the binder. The ZnO-Pd/[C4mim]-[PF6]/PE was used as an electroanalytical sensor for the determination of sunset yellow (SY) and obtained results proved a distinct improvement in oxidation signal about 2.57 times compared to an unmodified electrode. On the other hand, the ZnO-Pd/[C4mim]-[PF6]/PE showed a good ability for the determination of SY in concentration range 0.001-280 μM with detection limit 0.4 nM. In addition, the ability of ZnO-Pd/[C4mim]-[PF6]/PE for the determination of SY was checked in various food samples and recovery data between 97.84-104.73% confirm the powerful ability of proposed sensor for determination of SY in food samples.
Keywords :
Sunset yellow , ZnO , Pd nanoparticle , 1 , butyl , 3 , methylimidazolium hexafluoro phosphate , Food analytical sensor
Journal title :
Eurasian Chemical Communications
Journal title :
Eurasian Chemical Communications
