Sudan I monitoring as a hazardous azo dye using an electroanalytical tool amplified with NiO/SWCNTs-ionic liquid catalysts.

Abstract

Sudan I is an azo dye that causes cancer and is not allowed to be used in food products. The current study focused on the design and manufacture of an electrochemical sensor modified with NiO/SWCNTs, as a nano-catalyst, and 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (1H3MIbTMI), as an ionic liquid binder, to monitor Sudan I as azo additive dyes in various food samples. The modified carbon paste electrode (CPE/NiO/SWCNTs/1H3MIbTMI) offered superior electrochemical performance metrics as an analytical sensor to detect trace levels of Sudan I within the concentration range of 1.0 nM-250 μM. The limit of detection was determined as 0.3 nM by the differential pulse voltammetric (DPV) technique. The proposed CPE/NiO/SWCNTs/1H3MIbTMI can be put forward to be employed as an analytical instrument for sensing Sudan I in various culinary sauces, including chili, tomato, and strawberry sauces. The obtained recovery range was determined as 97.6%-104.35%. These findings demonstrated the effectiveness of the newly created material and its potential for usage as a novel analytical instrument.

• Authors: Javid Arjmandi, Seyed-Ahmad Shahidi, Azade Ghorbani-HasanSaraei, Mohammad Bagher Limooei, Shahram Naghizadeh Raeisi
• Journal: Chemosphere (Chemosphere) Vol. 309 Issue Pt 1 Pg. 136673 (Dec 2022) ISSN: 1879-1298 [Electronic] England
• PMID: 36195124 (Publication Type: Journal Article)
• Copyright: Copyright © 2022 Elsevier Ltd. All rights reserved.

Chemical References

• Ionic Liquids
• 1-phenylazo-2-naphthol
• Azo Compounds
• Carbon
• Imides
• Coloring Agents

Topics

• Ionic Liquids
• Azo Compounds
• Electrochemical Techniques (methods)
• Carbon
• Imides
• Coloring Agents