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Salting-out strategy for speciation of selenium in aqueous samples using centrifuge-less dispersive liquid-liquid microextraction

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Abstract

The centrifuge-less dispersive liquid-liquid microextraction (DLLME) technique was used to separate selenium species in aqueous samples. According to the salting-out effect, a simple approach was used to eliminate the centrifugation step. The optimization of the independent variables was performed using chemometric methods. Under optimal conditions, this methodology was statistically validated. The linearity was between 20 and 300 μg L−1. The limit of detection and quantification were calculated 3.4 μg L−1 and 10.4 μg L−1, respectively. The values of reproducibility and repeatability were determined ≤ 9.5% and ≤ 6.4, respectively. The possibility of the method was successfully assessed by analyzing the analytes in real samples clarified satisfactory recoveries (98.1–101.4% for Se (IV) and 98.4–101.5% for Se (VI)).

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Funding

This study was supported by grants from the Islamic Azad University, Central Tehran branch.

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Authors and Affiliations

  1. Department of Chemistry, Central Tehran Branch, Islamic Azad University, Niyayesh building, Imam Hassan Blv., Ashrafi-e-Esfehani Ave, Tehran, 86831-14676, Iran

    Beeta Mostafavi, Alireza Feizbakhsh & Elaheh Konoz

  2. Department of Chemistry, Varamin-Pishva Branch, Islamic Azad University, Naghsh-e-Jahan Sq., 338177489, Pishva, Varamin, Iran

    Hakim Faraji

Authors
  1. Beeta Mostafavi
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  2. Alireza Feizbakhsh
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  3. Elaheh Konoz
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  4. Hakim Faraji
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Correspondence to Alireza Feizbakhsh or Hakim Faraji.

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Mostafavi, B., Feizbakhsh, A., Konoz, E. et al. Salting-out strategy for speciation of selenium in aqueous samples using centrifuge-less dispersive liquid-liquid microextraction. Environ Monit Assess 192, 662 (2020). https://doi.org/10.1007/s10661-020-08609-3

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  • DOI: https://doi.org/10.1007/s10661-020-08609-3

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