1. Pt nanoparticles/laser-engraved graphene-based integrated electrochemical platform for point-of-use determination of ponceau 4R, amaranth and tartrazine in food.
- Author
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Wang J, Wu J, Sun M, Bai J, and Bo X
- Subjects
- Tartrazine, Reproducibility of Results, Electrochemical Techniques, Amaranth Dye, Lasers, Electrodes, Graphite, Nanoparticles
- Abstract
This study presents the first integrated electrochemical platform (IEP) with point-of-use and portable features for on-site determination of ponceau 4R (RP), amaranth (AM), and tartrazine (TZ) in food by integrating a mass-producible Pt nanoparticles/laser-engraved graphene (Pt NPs/LEG)-based sensing chip and a reusable electrochemical miniaturized workstation. The sensing chip utilizes Pt NPs/LEG with unique architectures as electrode material and exhibits desirable analytical performance towards RP, AM, or TZ with satisfied linear range (0.25-50 μM for RP, AM, and TZ), high sensitivity (7.29 μA μM
-1 cm-2 , 7.18 μA μM-1 cm-2 , and 2.02 μA μM-1 cm-2 for RP, AM, and TZ, respectively) and low limit of detection (50 nM, 58 nM, and 204 nM for RP, AM, and TZ, respectively). The sensing chip shows excellent selectivity, high stability, outstanding reproducibility, and acceptable mechanical stability. IEP can be implemented to test RP, AM, or TZ in real samples with satisfactory accuracy and recoveries., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier Ltd. All rights reserved.)- Published
- 2024
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