1. Graphite carbon nitride-modified screen-printed electrode as a highly sensitive and selective sensor for detection of amaranth.
- Author
-
Mohammadzadeh Jahani P, Aflatoonian MR, Abbasi Rayeni R, Di Bartolomeo A, and Mohammadi SZ
- Subjects
- Amaranth Dye, Carbon, Electrochemical Techniques, Electrodes, Nitriles, Graphite
- Abstract
This work presented a particular electrochemical sensor for analysis of amaranth, an azo toxic dye. A graphite nitride carbon (g-C
3 N4 ) was used to modify an electro-treated screen-printed electrode (g-C3 N4 /SPE) for electroanalysis of amaranth. Physicochemical characteristics and analytical performance of g-C3 N4 /SPE were investigated by relevant equipment. The g-C3 N4 /SPE when comparing with bare SPE, possessed an impressive electrocatalytic performance towards the amaranth oxidation. As-developed sensor under the optimal circumstances exhibited an extended linear response range for different amaranth concentrations of 0.08 μM-340.0 μM, with a narrow practical limit of detection (LOD) of 0.02 μM, a limit of quantification (LOQ) of 0.08 μM, and an unparalleled sensitivity of 0.0702 μA/μM using differential pulse voltammetry (DPV). The applicability of as-fabricated sensor was verified by determining the amaranth in real samples, with acceptable recoveries., (Copyright © 2022 Elsevier Ltd. All rights reserved.)- Published
- 2022
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