Abstract
This study presents the use of a magnetic nanofluid (MNF) comprising of deep eutectic solvent (DES) and reduced graphene oxide-coated magnetic nanocomposite (RGO@MNC) to preconcentrate copper from water brewed in a traditional coffee pot for determination by flame atomic absorption spectrometry (FAAS). The DES served as a carrier fluid to enhance the dispersion of RGO@MNC in aqueous solution. Significant parameters of the method were optimized to enhance the extraction efficiency. Optimum parameter variables were used to validate the method, recording a detection limit of 6.8 ng mL−1, a quantification limit of 22.7 ng mL−1, and a percent relative standard deviation (RSD%) of 6.2. The method exhibited good linearity in a wide concentration range of 20–500 ng mL−1. Water boiled in the traditional coffee pot was spiked at 60, 120, 225, and 300 ng mL−1, and the high recovery results demonstrated the viability of the method in wide concentration range.
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Kasa, N.A., Zeytinci, N.K., Aydin, B.N. et al. Detection of copper in boiled water samples from traditional coffee pots by applying deep eutectic solvent-assisted reduced graphene oxide-coated magnetic nanocomposite-based microextraction strategy. Chem. Pap. 78, 2185–2192 (2024). https://doi.org/10.1007/s11696-023-03228-x
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DOI: https://doi.org/10.1007/s11696-023-03228-x