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Preconcentration and Separation of Copper(II) by 3-Aminopropylpolysiloxane Immobilized Ligand System

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Abstract

Porous solid insoluble polysiloxane-immobilized ligand system bearing propylamine of the general formula P-(CH2)3-NH2 (where P represents [Si–O] n siloxane network) was prepared and evaluated for the separation and preconcentration of copper(II) from aqueous solution. The ligand system retained Cu(II) effectively when used as a metal ion extractant. The ligand system also showed high selectivity to separate copper(II) from a mixture of metal ions (Co(II), Ni(II), Cu(II)) when used as chromatographic stationary phase. The optimum pH appeared to be pH = 5.5 using acetate buffer as an eluent. Thermal analysis showed that the ligand system is very stable at relatively high temperatures.

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Authors and Affiliations

  1. Department of Chemistry, The Islamic University of Gaza, P.O. Box 108, PNA

    Nizam M. El-Ashgar

  2. Department of Chemistry, Al-Azhar University-Gaza, P.O. Box 1277, PNA

    Issa M. El-Nahhal

Authors
  1. Nizam M. El-Ashgar
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  2. Issa M. El-Nahhal
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Correspondence to Nizam M. El-Ashgar.

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El-Ashgar, N.M., El-Nahhal, I.M. Preconcentration and Separation of Copper(II) by 3-Aminopropylpolysiloxane Immobilized Ligand System. J Sol-Gel Sci Technol 34, 165–172 (2005). https://doi.org/10.1007/s10971-005-1354-9

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  • DOI: https://doi.org/10.1007/s10971-005-1354-9

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