Simultaneous determination of sunset yellow and tartrazine in real samples on an <i>n</i>-butylamine-graphite/polyaminophenol composite electrode.

ABSTRACT: A composite electrode was fabricated for simultaneous determination of sunset yellow (SY) and tartrazine (Tz) in foods and syrup. It is based on n-butylamine intercalation into graphite and then dropped on a poly (4-aminophenol)/glassy carbon electrode (GCE). The electrode surface morphologies, chemistry, and electrical properties were identified by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy (RS), and electrochemical impedance spectroscopy (EIS). The new composite electrode significantly increased the electrochemical response of SY and Tz relative to a bare GCE. The peak current of SY and Tz increased linearly depending on their concentrations from 0.006 μmol L^-1 to 1.0 μmol L^-1 (r = 0.994) and over two linear

SUBMITTER: Afsar MC 

PROVIDER: S-EPMC11913369 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature