Derivative spectrophotometric determination of copper and palladium simultaneously by using MDTC as a reagent

A selective, sensitive, and economical derivative spectrophotometric method has been developed for the determination of trace amount of Cu(II) and Pd( II) with MDTC as a reagent in the presence of CTAB, a solubilizing agent. The molar absorption coefficient and analytical sensitivities of the 1: 2 Cu( MDTC) 2 and Pd( MDTC) 2 complexes are 2.467 x 10(4) and 2.989 x 10(4) l mol(-1), respectively. The developed derivative procedure, is applied for the rapid and selective simultaneous determination of Cu( II) and Pd( II) in the range of 0.2 - 15 and 0.1 - 10 mu g/ml, respectively. Complex matrices, including alloys, biological samples, pharmaceutical samples and synthetic mixtures have been successfully analyzed for trace amounts of two metal ions.