Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 240, Issue -, Pages 1257-1264Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2016.08.135
Keywords
Multi-walled carbon nanotubes; Food colorants; Soft drinks; Tartrazine; Sunset yellow; Carmoisine; 1,3-dioxolane
Funding
- FONDECYT-CHILE [3140533]
Ask authors/readers for more resources
Food colorants are chemicals added to foods and soft drinks during manufacturing or processing. However, some of these chemicals represent potential risks to human health, especially if they are consumed in excess. Here, we modified a glassy carbon electrode (GCE) with multi-walled carbon nanotubes (MWCNTs) using 1,3-dioxolane as a dispersant agent, resulting in a stable and reproducible electrochemical sensor. The resulting sensor was applied to study the food dyes tartrazine, sunset yellow and carmoisine, showing high sensitivity and reproducibility. The influences of the scan rate, pH, amount of MWCNTs and accumulation time were studied. Moreover, the developed method was successfully applied in the determination of colorants in commercial soft drinks and compared with a chromatographic method. The resulting concentrations were compared based on the maximum amount of soft drink that a child and an adult can consume before reaching the admissible daily intake (ADI) of each colorant. (C) 2016 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available