Colorimetric determination of food colourants using solid phase extraction into polymethacrylate matrix

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5 Citations (Scopus)


This paper describes a simple colorimetric method for determination of Brilliant Blue, Sunset Yellow, Ponceau 4R and Tartrazine using transparent polymer optode. The method provided acceptable linear ranges 0.01–3.0 mg L −1 with correlation coefficients higher than 0.995 under the optimal conditions. Commercial beverages and juices containing different amounts of food dyes were analyzed and the results were compared to those obtained by HPLC.

Original languageEnglish
Pages (from-to)186-189
Number of pages4
Publication statusPublished - 1 Sep 2019



  • Beverages
  • Colorimetric sensor
  • Food colourant
  • Polymethacrylate matrix
  • Solid phase spectrophotometry

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemistry(all)
  • Biochemistry
  • Spectroscopy

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