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  • Chem Sci Trans., 2012, 1(1),  pp 217-225  

    DOI:10.7598/cst2012.131

    Research Article

    Flame Atomic Absorption Determination of Ni2+, Cu2+ and Co2+ Ions in Some Water and Food Samples After Cloud Point Extraction Using a Thio Schiff-Base as a New Complexing Agent

  • ARDESHIR SHOKROLLAHI1*, SARA ESLAMI2,3 and ALI HOSSEIN KIANFAR1
  • 1Chemistry Department, Yasouj University 75918-74831, Yasouj, Iran
    2Chemistry Department, Islamic Azad University of Firouzabad, Firouzabad 74715-117, Iran
    3Young Journalists Club Islamic Azad University of Firouzabad, Firouzabad, Iran
  • Abstract

    In this work, N(2-thiophenyl)-1-(2-hydoxyphenyl)Imine (NTPHPI) was used as a proper complexing agent for the preconcentration by cloud point extraction followed by atomic absorption spectrometric to determine of Ni2+, Cu2+ and Co2+ ions in real samples. NTPHPI and Triton X-114 were used as hydrophobic ligand and non-ionic surfactant respectively and the pH of 8 was chosen as optimum. Under the optimized experimental conditions, the selective preconcentration and determination of low concentration of Ni2+, Cu2+ and Co2+ ions as 1, 5 and 6 ng mL-1 can be made respectively. The proposed method was successfully applied to the preconcentration and low-level determination of the cited ions in different water, chocolate and honey samples.

    Keywords

    Ni2+, Cu2+ and Co2+ ions, Cloud-point extraction, N(2-thiophenyl)-1-(2-hydoxyphenyl) Imine

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