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| Naji, M. |
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| Azevedo, Nuno Monteiro |
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Mohammad, Rania Edrees Adam
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Publications (3/3 displayed)
- 2023Recent Trends in Treatment and Fabrication of Plant-Based Fiber-Reinforced Epoxy Composite: A Reviewcitations
- 2022Deep Eutectic Solvent Functionalized Graphene Oxide Based Ferrofluid for the Liquid Phase Microextraction of Fluoroquinolones from Water Samplescitations
- 2020EFFECT OF FIBER SURFACE MODIFICATION ON THE MECHANICAL PROPERTIES OF RICE HUSK/GLASS FIBER REINFORCEMENT EPOXY RESIN HYBRID COMPOSITE
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article
Deep Eutectic Solvent Functionalized Graphene Oxide Based Ferrofluid for the Liquid Phase Microextraction of Fluoroquinolones from Water Samples
Abstract
<jats:p>The development of smart materials have a significant impact on sample preparation and preconcentration methods. Ferrofluid or magnetic fluids (FF) are smart colloidal suspensions of single domain magnetic nanoparticles in a polar or non-polar liquid carrier. In this study, graphene oxide magnetite (GO@Fe<jats:sub>3</jats:sub>O<jats:sub>4</jats:sub>) and deep eutectic solvent-based choline chloride and ethylene glycol as a carrier liquid were utilized to form GO@Fe<jats:sub>3</jats:sub>O<jats:sub>4</jats:sub>-DES FF. The synthesised GO@Fe<jats:sub>3</jats:sub>O<jats:sub>4</jats:sub>-DES FF was characterized using FTIR, SEM, TEM and vibrating sample magnetometer (VSM). GO@Fe<jats:sub>3</jats:sub>O<jats:sub>4</jats:sub>-DES FF was further developed for the application of GO@Fe<jats:sub>3</jats:sub>O<jats:sub>4</jats:sub>-DES FF-liquid phase microextraction (LPME) for enrofloxacin as test compound. Several parameters such as type of FF composition and volume, extraction time, desorption solvent volume, desorption time and solution pH were optimised and analysed using HPLC-UV. Under optimum conditions, the developed GO@Fe<jats:sub>3</jats:sub>O<jats:sub>4</jats:sub>-DES FF-LPME method showed good linearity, R<jats:sup>2</jats:sup> ≥ 0.9921, repeatability, RSD 0.57 – 9.40 %. The developed GO@Fe<jats:sub>3</jats:sub>O<jats:sub>4</jats:sub>-DES FF-LPME method was applied for the determination of enrofloxacin in water samples from Langat River Basin, Selangor and the recovery of 71.6 – 112.3% was obtained. In conclusion, the developed GO@Fe<jats:sub>3</jats:sub>O<jats:sub>4</jats:sub>-DES FF-LPME method for the determination of enrofloxacin showed excellent sensitivity and precision and may be an excellent alternative method for the extraction on water samples.</jats:p>