عنوان المقالة:Separation of Cu (II), Ni (II), and Co (II) Ions Using Iminobis (N‐2‐Aminoethylacetamide) Polysiloxane‐Immobilized Ligand System
أ.د نظام محمود الأشقر | Prof. Nizam M. El-Ashgar | 13759
- نوع النشر
- مجلة علمية
- المؤلفون بالعربي
- Nizam M El‐Ashgar, Issa M El‐Nahhal
- الملخص العربي
- Extraction of Cu(II), Ni(II), and Co(II) metal ions from aqueous solutions was investigated using iminobis(N‐2‐aminoethylacetamide) polysiloxane‐immobilized ligand system of the general formula P‐(CH2)3‐N(CH2CONHCH2CH2NH2)2, where P represents [Si‐O]n siloxane network. The immobilized 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 ligand system preconcentrated Cu(II) effectively at different concentrations when used as a stationary phase extractant. The optimum pH for maximum metal uptake appeared to be pH 5.0 using acetate buffer solution. The preconcentated chemisorbed metal ions were regenerated from the solid extractant using 0.5 M HCl.
- تاريخ النشر
- 01/10/2006
- الناشر
- Journal of dispersion science and technology
- رابط DOI
- http://dx.
- رابط خارجي
- http://www.tandfonline.com/doi/abs/10.1080/01932690600766108
- الكلمات المفتاحية
- Ion chromatography, separation of metal ions, polysiloxanes, immobilized‐polysiloxane ligand system