Ultrasound-assisted ionic liquid-based dispersive liquid-liquid microextraction procedure for preconcentration of cobalt and nickel in environmental and biological samples prior to FAAS determination | ||
| Bulletin of Faculty of Science, Zagazig University | ||
| Article 10, Volume 2022, Issue 2, July 2022, Pages 105-120 PDF (1.37 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/bfszu.2022.135282.1130 | ||
| Authors | ||
| Ragaa elsheikh1; Heba El Sayed2; Sherehan Abo Al Ezz3; Walaa Gamil3; Mohamed Ali3; Ayman A Gouda* 4; Shyma M Fawzi3 | ||
| 1Chemistry Department, Faculty of Science, Zagazig University, Zagazig, 44519, Egypt. | ||
| 2Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt | ||
| 3Chemistry Department, Faculty of Science, Zagazig University, Zagazig, 44519, Egypt | ||
| 4Chemistry Department, Faculty of Science, Zagazig University, Zagazig, Egypt | ||
| Abstract | ||
| Prior to FAAS determination, a green, simple, and validated ultrasound-assisted ionic liquid-based dispersive liquid-liquid microextraction technique (UA-IL-DLLME) was developed for preconcentration and separation of cobalt (Co(II)) and nickel (Ni(II)) ions in various environmental and biological samples. The suggested method uses an ionic liquid (IL) (1-hexyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate [HMIM][FAP]) as an extraction solvent for Co(II) and Ni(II) ions following complexation with 3-(2-hydroxy-5-methyl-1-ylazo)-1,2,4-triazole (HMAT) at pH 8. The effects of several analytical factors on microextraction performance were examined. Under ideal conditions, the calibration curves were linear in the ranges of 1–400 and 1-300 μg L−1, with limits of detection of 0.30 and 0.28 μg L−1 for Co(II) and Ni(II), respectively. The preconcentration factor was 100. The analyte recovery rates ranged from 96to 102 percent. Furthermore, for Co(II) and Ni(II), the relative standard deviation (RSD%) for intra-day (1.20 and 1.50%) and inter-day (1.60 and 1.80%) as precision, respectively. The proposed preconcentration approach was tested using certified reference materials (SRM 1570A spinach leaves and TMDA-52.3 fortified water). The suggested UA-IL-DLLME method was successfully used to preconcentrate and determine the concentration of Co(II) and Ni(II) ions in a variety of real environmental (water, juice, and food) and biological (hair) samples, producing satisfactory results. | ||
| Keywords | ||
| Cobalt and Nickel; Ionic liquid; Microextraction; Environmental and biological samples; FAAS | ||
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