Spectrophotometric determination of traces allura red in environmental samples after a deep eutectic solvent-based microextraction

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UZCAN F., SOYLAK M.

INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY, vol.102, no.7, pp.1520-1530, 2022 (SCI-Expanded)

• Publication Type: Article / Article
• Volume: 102 Issue: 7
• Publication Date: 2022
• Doi Number: 10.1080/03067319.2020.1738422
• Journal Name: INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
• Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aquatic Science & Fisheries Abstracts (ASFA), CAB Abstracts, Chemical Abstracts Core, Chimica, Compendex, Environment Index, Food Science & Technology Abstracts, Pollution Abstracts, Veterinary Science Database
• Page Numbers: pp.1520-1530
• Keywords: Allura red, spectrophotometry, deep eutectic solvents, microextraction, separation, preconcentration, CLOUD POINT EXTRACTION, LIQUID-PHASE MICROEXTRACTION, ATOMIC-ABSORPTION-SPECTROMETRY, WATER SAMPLES, MALACHITE GREEN, FRUIT JUICE, PONCEAU 4R, LEAD II, PRECONCENTRATION, FOOD
• Erciyes University Affiliated: Yes

Abstract

A new method has been developed based on UV-Vis spectrophotometer measurement after liquid-phase microextraction using deep eutectic solvents for the determination of allura red dye. Tetra-n-butyl ammonium bromide and decanoic acid were used as deep eutectic solvent components by the developed method. The effects of the method on recovery, mainly pH, deep eutectic solvent components and volume, tetrahydrofuran volume, matrix effects, model solution volume, ultrasonication time and centrifugation time were also investigated. Allura red was extracted into the deep eutectic solvent phase at pH 4.0. The relative standard deviations were lower than 5%. The limit of detection (LOD) and preconcentration factor were found to be 3.92 mu g/L and 13, respectively. The accuracy of the method was confirmed by the addition method on water, detergent and chocolate samples.