A Simple and Cheap Ultrasound-Assisted Microextraction Procedure For Extraction of Tartrazine in Soft Drinks and Foodstuff
Abstract
In this study, a simple and cheap ultrasound-assisted ionic liquid-based
floating organic droplets microextraction (UA-IL-FODME) has been proposed for
spectrophotometric determination of synthetic food dye (tartrazine) in soft
drinks and food samples. 1-Octyl-3-methylimidazolium tetrafluoroborate
[C8MIM][BF4] and 1-octanol were used as the extraction solvent and dispersant
solvent, respectively. The method is based on extracting the tarrazine to the
ionic phase with the help of ultrasonic effect at pH 5.5. Some experimental
variables (pH, ionic liquid amount, type and volume of dispersive solvent, and
ultrasonic conditions) were studied and optimized in detail. In optimum
conditions, some analytical parameters of the method were as follows. Operating
range, limit of detection, preconcentration factor, recovery % and RSD % values
were 10-700 µg L-1, 3.2 µg L-1, 75, 94.7-104.7% and 2.7%, respectively.
Following comprehensive validation studies, the recommended method was
successfully applied to the extravasation and determination of tartrazine in
soft drinks and foodstuff.
Keywords
Floating organic droplets,Ionic liquid,Ultrasound,Tartrazine,Soft drinks,Foodstuff
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