Bismuth(III), Copper(II) and Palladium(II) complexes of dimethyl dithiophosphoric acid (DDTP) from acidic media are extracted in chloroform and separated on YMC ODC 5 mu m column (150 x 4.6 mm id), when eluted isocratically with a mixture of acetonitrile: methanol: water (70:20:10 v/v/v) with a flow rate 0.6 ml/min acid detection at 295 nm. Linear calibration curve were obtained with 25-125 mu g aliquot of each of metal with detection limits of 0.4-0.8 ng/injection. The method is applied for the determination of copper in copper wires.


MOHAMMAD Y KHUHAWAR ,A H CHANNAR ,S N LANJWANI ,