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Ionic liquid-based dispersive liquid–liquid microextraction for determination of trace amounts of iron in water, rock and human blood serum samples

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Abstract

A green and sensitive dispersive liquid-phase microextraction procedure based on room-temperature ionic liquid (1-hexyl-3-methylimidazolium hexafluorophosphate) for preconcentration and determination of total iron in real samples prior to flame atomic absorption spectrometry was developed. 2-Mercaptopyridine-N-oxide (pyrithione) and ethanol were used as complexing agent and dispersive solvent in the proposed method, respectively. The factors influencing the extraction were optimized. Under optimum conditions, the enhancement factor of 15 was obtained from only 11.35 mL of aqueous phase. The linear dynamic range and the detection limit were 10.0–700 and 2.4 μg L−1, respectively. The relative standard deviation (RSD) for ten replicate measurements of 500 μg L−1 of iron is 3.1 %. The developed method has been successfully applied for the determination of iron in water samples, human blood serum and rock certified reference material with high efficiency.

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Science, University of Kurdistan, Sanandaj, Iran

    Gholamreza Khayatian, Seyde Somaye Hosseini & Shahed Hassanpoor

Authors
  1. Gholamreza Khayatian
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  2. Seyde Somaye Hosseini
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  3. Shahed Hassanpoor
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Correspondence to Gholamreza Khayatian.

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Khayatian, G., Hosseini, S.S. & Hassanpoor, S. Ionic liquid-based dispersive liquid–liquid microextraction for determination of trace amounts of iron in water, rock and human blood serum samples. J IRAN CHEM SOC 10, 1167–1173 (2013). https://doi.org/10.1007/s13738-013-0258-9

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  • DOI: https://doi.org/10.1007/s13738-013-0258-9

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