Electroanalytical Detection of Indigo Carmine in Presence of Tartrazine Using a Poly(dl-phenylalanine) Modified Carbon Nanotube Paste Electrode

Kanthappa Bhimaraya, Jamballi G. Manjunatha, Hareesha Nagarajappa, Ammar M. Tighezza, Munirah D. Albaqami, Mika Sillanpää

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Certain dyes are deleterious to the biological system, including animals and plants living in the water sources, soil sources, and so on. Thus, the analysis of these dyes requires a potent, quick, and cost-effective approach to the environmental samples. The present research work shows a modest, low-cost, and eco-friendly electrochemical device based on poly(dl-phenylalanine)-layered carbon nanotube paste electrode (P(PAN)LCNTPE) material for indigo carmine (ICN) detection in the presence of tartrazine. The cyclic voltammetric, field emission scanning electron microscopy, and electrochemical impedance spectroscopic methods were operated for the detection of the redox nature of ICN and electrode material surface activities, respectively. In better operational circumstances, P(PAN)LCNTPE provided better catalytic activity for the redox action of ICN than the bare carbon nanotube paste electrode. The P(PAN)LCNTPE showed good electrochemical activity during the variation of ICN concentrations ranging from 0.2 µM to 10.0 µM with improved peak current, and the limit of detection was about 0.0216 µM. Moreover, the P(PAN)LCNTPE material was performed as a sensor of ICN in a tap water sample and shows adequate stability, repeatability, and reproducibility.

Original languageEnglish
Article number461
JournalChemosensors
Volume10
Issue number11
DOIs
Publication statusPublished - Nov 2022
Externally publishedYes

Keywords

  • carbon nanotubes
  • electrochemical sensor
  • indigo carmine
  • poly(dl-phenylalanine)
  • tartrazine
  • water samples

ASJC Scopus subject areas

  • Analytical Chemistry
  • Physical and Theoretical Chemistry

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