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A comparative study on the preconcentration of some metal ions in water samples with Cu(II) and Ni(II) salicylaldoxime coprecipitants

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Abstract

New separation and preconcentration procedures based on the coprecipitation of Fe(III) and Pb(II) ions with Cu(II) salicylaldoxime coprecipitant and of Cu(II) with Ni(II) salicylaldoxime coprecipitant were studied comparatively. The coprecipitation conditions for each method, such as the effect of the pH, the amounts of carrier elements and reagent, sample volume and matrix effects were examined in detail. The determinations of analyte ions were performed by flame AAS. Under optimised conditions the detection limits of the methods (3s/b) were 1.58, 3.56 and 1.32 μg L−1 for iron(III), lead(II) an copper(II), respectively. The precision (as RSD %) of the methods was ≤3.2%. Each method was validated by both spiked tap water, dam water samples and by the analysis of certified reference material (TMDA-54.4 fortified lake water). It was found that the recovery of Fe(III), Pb(II) and Cu(II) from the water samples was ≥90%.

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Acknowledgements

The authors are grateful to the Unit of the Scientific Research Project of Erciyes University (Project no: FBT-06-80) for their financial support.

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Arts and Sciences, Erciyes University, TR-38039, Kayseri, Turkey

    Şerife Tokalıoğlu & Selen Yıldız

Authors
  1. Şerife Tokalıoğlu
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  2. Selen Yıldız
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Corresponding author

Correspondence to Şerife Tokalıoğlu.

Electronic supplementary material

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Fig. S1a

Effect of amounts of salicylaldoxime on the recoveries of Fe(III) and Pb(II) ions (carrier element; 2 mg of Cu, pH 9, n = 3).(DOC 63 KB)

Fig. S1b

Effect of amounts of salicylaldoxime on the recoveries of Cu(II) ions (carrier element; 3 mg of Ni, pH 9, n = 3).(DOC 59 KB)

Table S1

Recovery of the analytes in the spiked tap and dam water samples (sample volume; 50 mL).(DOC 39.5 KB)

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Tokalıoğlu, Ş., Yıldız, S. A comparative study on the preconcentration of some metal ions in water samples with Cu(II) and Ni(II) salicylaldoxime coprecipitants. Microchim Acta 165, 129–133 (2009). https://doi.org/10.1007/s00604-008-0110-6

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  • DOI: https://doi.org/10.1007/s00604-008-0110-6

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