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Turkish Journal of Chemistry

Abstract

A composite electrode was fabricated for simultaneous determination of sunset yellow (SY) and tartrazine (Tz) in foods andsyrup. 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). Thenew composite electrode significantly increased the electrochemical response of SY and Tz relative to a bare GCE. The peak currentof 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 linearranges from 0.06 to 1.50 μmol L–1 (r = 0.9955) and from 2.0 to 10.0 μmol L–1 (r = 0.9902), respectively. The limits of detection of SY andTz were 2.60 nmol L–1 and 0.025 μmol L–1, respectively (S/N = 3). SY and Tz contents in real samples were determined in syrup, juicepowder, and candy. Spiked recovery for samples was from 96.4% to 106.8%. The relative standard deviations were lower than 5.0%.

Author ORCID Identifier

MÜRŞİDE CEREN AFŞAR: 0000-0001-7328-5949

ZEKERYA DURSUN: 0000-0001-8887-3356

DOI

10.55730/1300-0527.3714

Keywords

Sunset yellow, tartrazine, n-butylamine, poly (4-aminophenol), n-butylamine intercalated graphite

First Page

103

Last Page

117

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

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