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

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 .