Photometric determination of copper(II) by adsorption of its 1-phenyl- 3( 2-thiazolyl) thiourea complex on polyurethane foam

Abstract

Adsorption of I-phenyl-3-(2-thiazolyl) thiourea-copper( II) complex on polyurethane foam has been studied and a new method is described for the photometric determination of copper(II). The complex can be extracted into chloroform and it has &lambda;_max at465 nm. The absorbance shows a linear relationship over the concentration range 10-100 <em>m</em><em>g </em>Cu(II) in 10 ml chloroform. The molar absorptivity and sensitivity are found to be 1.37 x 10⁴ 1 mol^-1 cm^-1 and 0.014 <em>m</em><em>g </em>cm^-2 of Cu(II) for 0.001 absorbance respectively. The .method has been successfully applied for the estimation of micro amounts of copper(II) in alloys.