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 | 13815
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
رجوع