ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

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

Nursu Aylin Kasa, Nagehan Kübra Zeytinci, Berra Nur Aydin, and Sezgin Bakirdere

Department of Chemistry, Faculty of Art and Science, Yıldız Technical University, Istanbul, Türkiye

E-mail: bsezgin23@yahoo.com

Received: 25 September 2023  Accepted: 20 November 2023

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.

Keywords: Copper; Magnetic nanofluids; Microextraction; Coffee pots

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-023-03228-x

Chemical Papers 78 (4) 2185–2192 (2024)