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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

Publisher

The Scientific and Technological Research Council of Türkiye (TÜBİTAK)

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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