Abstract
Diphenyl diselenide was immobilized on chitosan loaded with magnetite (Fe3O4) nanoparticles to give an efficient and cost-effective nanosorbent for the preconcentration of Pb(II), Cd(II), Ni(II) and Cu(II) ions by using effervescent salt-assisted dispersive magnetic micro solid-phase extraction (EA-DM-μSPE). The metal ions were desorbed from the sorbent with 3M nitric acid and then quantified via microflame AAS. The main parameters affecting the extraction were optimized using a one-at-a-time method. Under optimum condition, the limits of detection, linear dynamic ranges, and relative standard deviations (for n = 3) are as following: Pb(II): 2.0 ng·mL−1; 6.3–900 ng·mL−1; 1.5%. Cd(II): 0.15 ng·mL−1; 0.7–85 ng·mL−1, 3.2%; Ni(II): 1.6 ng·mL−1,.6.0–600. ng·mL−1, 4.1%; Cu(II): 1.2 ng·mL−1, 3.0–300 ng·mL−1, 2.2%. The nanosorbent can be reused at least 4 times.
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The authors would like to thank the Semnan University Research Council for the financial support of this work.
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Fahimirad, B., Rangraz, Y., Elhampour, A. et al. Diphenyl diselenide grafted onto a Fe3O4-chitosan composite as a new nanosorbent for separation of metal ions by effervescent salt-assisted dispersive magnetic micro solid-phase extraction. Microchim Acta 185, 560 (2018). https://doi.org/10.1007/s00604-018-3094-x
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DOI: https://doi.org/10.1007/s00604-018-3094-x