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Chemically Modified Silica Gel with N-(2-aminoethyl)-Salicylaldimine for Simultaneous Solid Phase Extraction and Preconcentration of Cu(II), Ni(II), Cd(II) and Zn(II) in waters

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Abstract

In this study, N-(2-aminoethyl)salicylaldimine bonded silica gel was synthesized and characterized using Fourier transform infrared and C, H, N elemental analysis. The analytical conditions such as the pH and volume of the solution, flow rates of the sample solution and the type of eluent to achieve the simultaneous preconcentration of Cu(II), Ni(II), Cd(II) and Zn(II) were optimised using the modified silica gel loaded column using a solid phase extraction technique. Samples (50–500 ml) containing metal ions at optimal pH of 8 were passed through the column filled with the modified silica gel at 7 ml min−1 and then elution was achieved using 5 ml of 0.25 M HCl. The concentrations of metal ions in the eluates were determined using flame atomic absorption spectrometry (FAAS). The effects of matrix ions were also studied and none of the major ions interfered to the proposed method. The accuracy of the developed method was validated using a certified reference water sample (Ontario Lake water, NWTMDA-54.4). The method was successfully applied to the analysis of various natural water samples. The adsorption capacities of the modified silica gel for Cu(II), Ni(II), Cd(II) and Zn(II) ions were determined and found to be 0.332, 0.261, 0.130 and 0.375 mmol g−1, respectively.

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Acknowledgements

This work was supported by Sakarya University Scientific Research Foundation (Project number: 2010-50-01-014).

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Authors and Affiliations

  1. Sciences & Arts Faculty, Chemistry Department, Sakarya University, 54187, Sakarya, Turkey

    Gulsah Ozcelik, Mustafa Imamoglu & Salih Zeki Yildiz

  2. Sciences & Arts Faculty, Chemistry Department, Balikesir University, 10145, Balıkesir, Turkey

    Derya Kara

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  1. Gulsah Ozcelik
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  2. Mustafa Imamoglu
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  3. Salih Zeki Yildiz
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  4. Derya Kara
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Correspondence to Mustafa Imamoglu.

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Ozcelik, G., Imamoglu, M., Yildiz, S.Z. et al. Chemically Modified Silica Gel with N-(2-aminoethyl)-Salicylaldimine for Simultaneous Solid Phase Extraction and Preconcentration of Cu(II), Ni(II), Cd(II) and Zn(II) in waters. Water Air Soil Pollut 223, 5391–5399 (2012). https://doi.org/10.1007/s11270-012-1288-0

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