Preparation of sorbent for Zn (II) from modified active carbon for determination of Zn(II) in environmental samples

Subject Areas : Marine Chemistry

Kh.  Aghdam ¹ (Faculty of Marine Science and Technology, North Tehran Branch, Islamic Azad University.)
E.  Moniri ² (Chemistry Department, Islamic Azad University, Pishva (Varamin) Branch)
A.A.  Mehrdad Sharif ³ (Chemistry Department, Islamic Azad University, North Tehran Branch)
H.  Ahmad Panahi ⁴ (Chemistry Department, Islamic Azad University, Central Tehran Branch)

Received: 2010-08-29 Accepted : 2014-09-02 Published : 2014-02-20

Keywords: Preconcentration, Zinc ion, Active carbon, Iminodiactic acid,

Abstract :

In this study, a new chelating sorbent is synthesized for preconcentration and determination of Zn (II) in natural water samples (Sevin river). At first Activated Carbon is modified by Iminodiacetic acid. Cyanoric chloride is used as intermediate between Activated Carbon and Iminodiacetic acid. Then the effect of pH, interfering ions, contact time of sorbent are investigated. The results show the optimum pH, recovery and capacity of sorbent are 6.5, 98.9% and 66.6 mg/g respectively. The concentration of Zn (II) is determined by Flame Atomic Absorption Spectroscopy. Finally, it was shown that this sorbent can be used for adsorption of Zn (II) with high capacity.