1. Safa Majeed Hameed, R K Al-Kubaisy, Khalil Ibraheem Hussain
Abstract
Extraction of Al3+chloroanion complex AlCl4
- from NaCl media using the crown ether 15C5 as
complexing agent. The concentrations of NaCl and Al3+ions in addition to shaking time, organic solvent
effect, and cavity size effect. Thermodynamic show the ion exchange reaction was endothermic. The
stoichiometry shown on the basis of slope analysis and slope ratio methods the extracted species was
1:1:1 [Na15C5]+; AlCl4
-
.The extracted complex having λmax=241nm. The proposed method used for the
spectrophotometric determination of Al3+ in environmental and vital samples, %RSD=0.008136, D.L=
1.78×10-5 ppm, ε= 300.191 L.mol-1.cm-1 ,Sandell’s sensitivity= 0.00899µg/cm2.
م.د.صفا مجيد | Dr.Safa Majeed | 4968