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Liquid Ion Exchange Method for Extraction of Pb (II) as Anion by Using 15C5 Coupled with Spectrophotometric Determination in Different Samples | ||
| Journals kufa for chamical | ||
| Article 1, Volume 0, Issue 10, 2015, Pages 21-37 | ||
| Authors | ||
| Safa Majeed Hameed; R. K. Al-Kubaisy; Khalil Ibraheem Hussain | ||
| Abstract | ||
| Separation and extraction of chloroanion complex of Pb 2+ by using crown ether 15C5 had been investigated. This study includes determined hydrochloric acid and sodium chloride concentrations in aqueous phase and Pb 2+ ions concentration as well as shaking time, organic solvent effect, interferences, electrolyte salts and methanol effect. Thermodynamic parameters shown the ion exchange reaction was exothermic. In addition stoichiometry study shown that the ion pair complex extracted was 1:1:1 Cation: Ligand: Anion. UV-spectrum of extracting complex show λmax=241nm. 15C5 used as spectrophotometric reagent for the spectrophotometric determination of Pb 2+ in different samples, %RSD=0.00672, D.L= 5.04483×10 -5 ppm, ε= 2057.85 L.mol -1 .cm -1 , Sandell’s Sensitivity= 4.86×10 -7 µg/cm 2 | ||
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