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Magnetic Graphene-Dispersive Solid-Phase Extraction for Preconcentration and Determination of Lead and Cadmium in Dairy Products and Water Samples

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Abstract

A magnetic-dispersive solid-phase extraction (MDSPE) was used for precocentration of Pb(II) and Cd(II) in milk, yoghurt and water samples. An appropriate amount of suspension containing the magnetic graphene and Triton X-114 was injected rapidly into the aqueous sample by a syringe. Triton X-114 was used to achieve stable suspension of graphene in solution. The structure of the resulting products was confirmed by Fourier transform infrared (FT–IR) spectra, X-ray diffraction (XRD) spectrometry. The effects of various parameters were studied. A detection limit of 0.16 and 0.50 µg L−1 for Cd(II) and Pb(II) was obtained, respectively. The relative standard deviations (RSDs, n = 10) of 50 µg L−1 of Pb and Cd were 3.3 % and 2.1 %, respectively. The results indicated that the present method can be reliably used for determination of Pb(II) and Cd(II) in dairy products and water samples with good recoveries.

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Acknowledgments

Support of this investigation by the research council of Payame Noor University as well as proof reading by Barbora Ehrlichová is gratefully acknowledged.

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Authors and Affiliations

  1. Department of Chemistry, Payame Noor University, P.O. BOX 19395-3697, Tehran, Iran

    M. Ezoddin

  2. Education of Kurdistan Province, Saqqez, Iran

    B. Majidi

  3. Department of Radiopharmacy and Medicinal Chemistry, Tehran University of Medical Sciences, Tehran, Iran

    K. Abdi & N. Lamei

  4. Drug Design and Development Research Center,, Tehran University of Medical Sciences, Tehran, Iran

    N. Lamei

Authors
  1. M. Ezoddin
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  2. B. Majidi
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  4. N. Lamei
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Correspondence to M. Ezoddin.

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Ezoddin, M., Majidi, B., Abdi, K. et al. Magnetic Graphene-Dispersive Solid-Phase Extraction for Preconcentration and Determination of Lead and Cadmium in Dairy Products and Water Samples. Bull Environ Contam Toxicol 95, 830–835 (2015). https://doi.org/10.1007/s00128-015-1663-9

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  • DOI: https://doi.org/10.1007/s00128-015-1663-9

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