سال انتشار: ۱۳۸۸
محل انتشار: اولین کنفرانس بین المللی تصفیه فاضلاب و بازیافت آب، فناوری ها و یافته های نو
تعداد صفحات: ۸
N Nezamabadi – Department of Chemistry, Islamic Azad University, North Tehran branch,Tehran, Iran
M Rabani – Department of Chemistry, Islamic Azad University, North Tehran branch,Tehran, Iran
H Ahmad Panahi – Department of Chemistry, Islamic Azad University, Central Tehran Branch,Tehran, Iran
A new chelating resin was synthesized by functionalization of a polymer support, Amberlite XAD-4 with salicylic acid through an azo linkage (N=N). The products were characterized by scanning electron microscopy,elemental analysis, Fourier transform infrared spectroscopy.The optimum conditions for the extraction of Pb(II), Cu(II), Ni(II), Co(II) and Zn(II) in aqueous samples were studied by batch. The determination of the metal ions was carried out by flame atomic absorption spectrometry. Their sorption equilibrium was reached within 30 min. The preconcentraion factor was 100 for a 500ml sample volume. The sorbed metal ions were eluted by 0.5M HNO3(5ml) within 10min with the desorption recovery of 90%. The new method gave a good accuracy in batch system with the recovery of 93% for the extraction of all metal ions and R. S. D. Less than 1.36% ( n=5).