elsheikh, R., El Sayed, H., Abo Al Ezz, S., Gamil, W., Ali, M., Gouda, A., Fawzi, S. (2022). 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, 2022(2), 105-120. doi: 10.21608/bfszu.2022.135282.1130
Ragaa elsheikh; Heba El Sayed; Sherehan Abo Al Ezz; Walaa Gamil; Mohamed Ali; Ayman A Gouda; Shyma M Fawzi. "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, 2022, 2, 2022, 105-120. doi: 10.21608/bfszu.2022.135282.1130
elsheikh, R., El Sayed, H., Abo Al Ezz, S., Gamil, W., Ali, M., Gouda, A., Fawzi, S. (2022). '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, 2022(2), pp. 105-120. doi: 10.21608/bfszu.2022.135282.1130
elsheikh, R., El Sayed, H., Abo Al Ezz, S., Gamil, W., Ali, M., Gouda, A., Fawzi, S. 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, 2022; 2022(2): 105-120. doi: 10.21608/bfszu.2022.135282.1130
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
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.
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