Magnetic coffee residue biosorbent for selective extraction of zinc oxide nanoparticles in water samples
| Autor: | Abdurahman, Yasmin, Bekana, Deribachew, Temesgen, Ayalew, Bussa, Negussie, Aschale, Minbale, Teju , Endale, Amde , Meseret |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Bulletin of the Chemical Society of Ethiopia; Vol. 37 No. 4 (2023); 859-873 |
| ISSN: | 1726-801X 1011-3924 |
| DOI: | 10.4314/bcse.v37i4.5 |
| Popis: | Quantification of engineered nanomaterials in the environment has attracted researchers’ interest recently because of their increased release to the environment. In this study, a recyclable and easily accessible magnetized coffee residue (MCR) is proposed for magnetic solid-phase extraction (MSPE) of zinc oxide nanoparticles (ZnO-NPs) from water samples. The MCR was synthesized using a simple one-step chemical co-precipitation method from coffee residue and was characterized by state-of-the-art techniques. Various parameters affecting the MSPE efficiency of ZnO-NPs were optimized and 8.5 pH, 75 mg adsorbent, 120 min extraction time, 10 mL sample volume, 4 mL of 0.001 M HCl as an eluting solvent, and 30 min elution time were identified as the optimum conditions. Under these conditions, the method showed excellent linearity (R2 = 0.995) and good sensitivity (detection limit, 0.12 mg L-1, and quantification limit, 0.4 mg L-1). Intra and inter-day percent standard deviations were 1.4 and 2.2%, respectively, for the analysis of 6 mg L-1 ZnO-NPs. The practical applicability of the method for the extraction of ZnO-NPs in environmental samples was evaluated, and recovery values in the range of 93.0–98.2% were obtained, confirming its successful performance. Generally, the technique is easy, economical, and eco-friendly that can be considered for the extraction of metal oxide nanoparticles. KEY WORDS: Zinc oxide nanoparticles, Magnetic coffee residue, Magnetic solid-phase extraction, Flame atomic absorption spectroscopy, Environmental waters Bull. Chem. Soc. Ethiop. 2023, 37(4), 859-873. DOI: https://dx.doi.org/10.4314/bcse.v37i4.5 |
| Databáze: | OpenAIRE |
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