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

KASA N. A., Zeytinci N. K., Aydin B. N., BAKIRDERE S.

Chemical Papers, vol.78, no.4, pp.2185-2192, 2024 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 78 Issue: 4
  • Publication Date: 2024
  • Doi Number: 10.1007/s11696-023-03228-x
  • Journal Name: Chemical Papers
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core
  • Page Numbers: pp.2185-2192
  • Keywords: Coffee pots, Copper, Magnetic nanofluids, Microextraction
  • Yıldız Technical University Affiliated: Yes


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.