Authors : Shawket Kadhim Jawad, Musa Umran Kadhium and Ebaa Adnan Azooz
Abstract: By using two approaches cloud point extraction technology CPE and liquid ion exchange to separate and extracted Fe(III) and Hg(II) ions from acidic HCl media as ion pair association complexes by using new laboratory prepared 2-(4-hydroxy phenyl azo)-4-benzene naphthol (HPBN) whereas the spectrophotometric studies show the new organic reagent (HPBN) have a wave length for maximum absorbance was λmax = 450 nm, the ion pair association complex of Fe3+ λmax= 477 nm but for Hg2+ λmax= 476 nm, so that, the optimum condition for high extraction efficiency was 0.5M HCl for both ions ,100 μg metal ions in 10 mL aqueous solution 1×10-4 M of HPBN and necessary to heating the solution at 90°C for 20 min to Fe3+ ion and 15 min. For Hg2+ ion and in presence of 0.5 mL Triton X-100 for Fe3+ and 0.8 mL Triton X-100 for Hg2+ ion. As well as the research involved other studies such as electrolyte effect interferences effect, stoichiometry, application and determination of trace amounts of Fe(III) and Hg(II) in environmental sample by spectrophotometry.
Shawket Kadhim Jawad, Musa Umran Kadhium and Ebaa Adnan Azooz, 2019. Application Cloud Point Extraction Method Joined with Liquid Ion Exchange for Selective Determination of Fe3+ and Hg2+Journal of Engineering and Applied Sciences, 14: 3514-3521.