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Cloud point preconcentration and flame atomic absorption spectrometry: application to the determination of manganese in milk and water samples

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Abstract

Cloud point extraction has been used for preconcentration of trace amount of manganese. The analyte was complexed with 1-(2-pyridylazo)-2-naphtol (PAN) and Triton X-114 was added as surfactant. After phase separation, based on the cloud point of the mixture, and dilution of the surfactant-rich phase with methanol, the enriched analyte was determined by flame atomic absorption spectrometry. After optimization of the complexation and extraction conditions, enhancement factor of 49.1 was obtained. The detection limit was 0.39 ng ml−1 for manganese. The proposed method was applied to the determination of manganese in milk and water samples.

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Acknowledgement

Support of this investigation by the Research Council of University of Amirkabir through Grant is gratefully acknowledged.

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Chemical Engineering, University of Amirkabir, Tehran, Iran

    Alireza Rezaie Rod & Shahin Borhani

  2. Department of Chemistry, Faculty of Science, University of Tehran, Tehran, Iran

    Farzaneh Shemirani

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  1. Alireza Rezaie Rod
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  2. Shahin Borhani
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  3. Farzaneh Shemirani
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Correspondence to Alireza Rezaie Rod.

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Rod, A.R., Borhani, S. & Shemirani, F. Cloud point preconcentration and flame atomic absorption spectrometry: application to the determination of manganese in milk and water samples. Eur Food Res Technol 223, 649–653 (2006). https://doi.org/10.1007/s00217-005-0248-y

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  • DOI: https://doi.org/10.1007/s00217-005-0248-y

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