Cloud Point Extraction Methodology for Separation and Microamounts Determination of Lead(11)and Cadmium(11)Ions

الملخص

A Cloud point extraction procedure was presented for preconcentration of
lead(11)and cadmium(11)ions in various samples after complexation by 2-[(Benzo
thiazolyl)azo]-4-benzyl phenol (BTABP) with lead and 2-[(3-Bromo phenyl)azo]-4,5-
diphenylimidazole (BPADPI) with cadmium ions are quantitatively extracted in
Triton-x-100 Following separation ,5ml of 1,2Dichloroethane (1,2-DCE) was added
to surfactant -rich phase of lead and 5ml ethanol added for surfactant rich phase of
cadmium prior to its analysis by UV-Vis Spectrometry. The experimental conditions
such as pH, concentration of Triton-x-100, temperature, time of heating ,organic
solvent effect, stoichiometry for complex extracted, synergism, when evaluated in the
proposed method was applied for the determination of lead(II) and cadmium(II) in
different samples .