Copper concentration using micelle-mediated extraction in real samples

Subject Areas : Journal of the Iranian Chemical Research

Farshid Ahmadi ¹ ( Chemistry Department, Islamic Azad University, Gachsaran Branch, Gachsaran, Iran )
Azadeh Khanmohammadi ² ( Young Researchers Club, Islamic Azad University, Gachsaran Branch, Gachsaran, Iran )
Ziba Tavakoli ³ ( Chemistry Department, Islamic Azad University, Gachsaran Branch, Gachsaran, Iran )
Jamshid Jafarpour ⁴ ( Chemistry Department, Islamic Azad University, Gachsaran Branch, Gachsaran, Iran )

Received: 2008-05-30 Accepted : 2008-09-13 Published : 2008-10-20

Keywords: Copper, Cloud point extraction, Triton X-114, Flame atomic absorption spectrometry,

Abstract :

A simple and sensitive method is described for the pre-concentration by cloud point extraction followed by atomic absorption spectrometric determination of copper ion in real samples. At a solution pH of 5.5, 5, 5-diphenylimidazolidine-2, 4-dione (phenytoin) (DFID) and TritonX-114 were used as hydrophobic ligand and non-ionic surfactant. The adopted concentrations for DFID, Triton X-114 and HNO3, bath temperature, centrifuge rate and time were optimized. Detection limits (3SDb/m) of 1.7 ng mL-1 along with enrichment factors of 35 for these ions were achieved. The proposed procedure was applied to the analysis of real samples.

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