Repository of Research and Investigative Information

Repository of Research and Investigative Information

Rafsanjan University of Medical Sciences

Magnetic ionic liquid assisted single-drop microextraction of ascorbic acid before its voltammetric determination

(2017) Magnetic ionic liquid assisted single-drop microextraction of ascorbic acid before its voltammetric determination. Journal of Separation Science. pp. 4041-4049. ISSN 1615-9306

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Abstract

For the first time, we coupled a microextraction technique using a magnetic ionic liquid with voltammetric determination. A hydrophobic magnetic ionic liquid that contains the tetrachloromanganate(II) anion, namely, aliquat tetrachloromanganate(II), was synthesized and used for the extraction of ascorbic acid from aqueous solutions followed by voltammetric determination. The extraction procedure was carried out using a single drop microextraction technique in which the ascorbic acid containing magnetic ionic liquid was separated with a magnet and then cast onto the surface of a carbon paste electrode modified with TiO2 nanoparticles for the voltammetric quantification of the extracted ascorbic acid. Electrochemical quantification was carried out in a blank phosphate buffer solution. After optimizing different experimental conditions, a linear concentration range of 1.50-40.0 nM with a detection limit of 0.43 nM was obtained for the determination of ascorbic acid. The presented approach was successfully applied to the determination of ascorbic acid in samples of vitamin C effervescent tablets and orange juice.

Item Type: Article
Keywords: ascorbic acid magnetic ionic liquid single drop microextraction voltammetry selective potentiometric sensor poly(vinyl chloride) matrix pvc matrix membrane sensors paste electrode uric-acid separation dopamine preconcentration pharmaceuticals Chemistry
Page Range: pp. 4041-4049
Journal or Publication Title: Journal of Separation Science
Journal Index: ISI
Volume: 40
Number: 20
Identification Number: https://doi.org/10.1002/jssc.201700664
ISSN: 1615-9306
Depositing User: مهندس مهدی شریفی
URI: http://eprints.rums.ac.ir/id/eprint/4342

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