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Determination of Iron and Copper in Edible Oils by Flame Atomic Absorption Spectrometry After Liquid–Liquid Extraction

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Journal of the American Oil Chemists' Society

Abstract

In the present work, a novel and rapid extraction method for Fe(III) and Cu(II) from liquid edible oils is described. N,N′-Bis(4-methoxysalicylidene)-1,2-diamino ethane (MSE) was utilized for the extraction of metal ions and the determination was achieved by flame atomic absorption spectrometry (FAAS). In order to optimize the extraction conditions, a central composite design (CCD) technique was employed. The optimum conditions, the ratio of MSE solution volume to oil mass, stirring time and temperature, were determined as 1.2 and 1.1 mL g−1; 24.0 and 31.8 min and 25.3 and 33.2 °C for Fe(III) and Cu(II) extraction, respectively. The feasibility of the improved method was tested with oil-based metal standards affording 98.6 % recovery for both metals and 67.3 ng g−1 for Fe(III) and 15.3 ng g−1 for Cu(II) as limit of detection (LOD).

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Acknowledgments

The authors would like to thank the Scientific and Technological Research Council of Turkey (TUBITAK-TBAG Project Number 105T153) and Balıkesir University (BAP Project Number 2009/16) for financial support.

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Authors and Affiliations

  1. Chemistry Department, Faculty of Science and Arts, Balıkesir University, 10145, Çağış, Balıkesir, Turkey

    Feyzullah Tokay & Sema Bağdat

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  1. Feyzullah Tokay
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  2. Sema Bağdat
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Correspondence to Sema Bağdat.

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Tokay, F., Bağdat, S. Determination of Iron and Copper in Edible Oils by Flame Atomic Absorption Spectrometry After Liquid–Liquid Extraction. J Am Oil Chem Soc 92, 317–322 (2015). https://doi.org/10.1007/s11746-015-2603-x

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  • DOI: https://doi.org/10.1007/s11746-015-2603-x

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