Voltammetric determination of vanillin in commercial food products using overoxidized poly(pyrrole) film-modified glassy carbon electrodes

Authors : Şükriye Ulubay KARABİBEROĞLU, Çağri Ceylan KOÇAK

Pages : 291-305

View : 15 | Download : 9

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :In this work, a very simple, rapid, cheap, sensitive, and selective polymer film-modified electrode for vanillin determination in commercial food products was developed via electrochemical polymerization and overoxidation of pyrrole. The formation of both polyinsert ignore into journalissuearticles values(pyrrole); and overoxidized polyinsert ignore into journalissuearticles values(pyrrole); films on a glassy carbon electrode surface was characterized by electrochemical impedance spectroscopy, scanning electron microscopy, and X-ray photoelectron spectroscopy. Under optimized conditions, the calibration graph comprises two linear segments of 0.032-1.500 $\mu $mol L$^{-1}$ and 3.00--150.00 $\mu $mol L$^{-1}$ with a detection limit of 0.012 $\mu $mol L$^{-1}$. The selectivity of the modified electrode was examined in the presence of metals, inorganic ions, and organic substances. Moreover, the proposed method was successfully used for the assessment of vanillin contents in commercial food products with satisfactory results.
Keywords : Polymer film electrode, overoxidized polymer, vanillin determination