Extractive spectrophotometric determination of palladium(II) with o-methyl phenyl thiourea from synthetic mixtures

-3 hydrochloric acid media which requires only 10 s equilibriation time, the absorbance of yellow coloured palladium(II)-OMPT complex is measured at 340 nm. Complex is stable for more than 70 h. The composition of extracted species is 1:1, determined by mole ratio, job’s continuous variation method and it is confirmed by log-log plot. Beer’s law is obeyed in the range of 0.01 µgcm -3 to 15.0 µgcm -3 .The molar absorptivity and sandell’s sensitivity are2.85x10 3 dm 3 mole -1 cm -1 and 0.037 µgcm -2 . Method is free from large number of interferences from cations and anions. The method is applied for separation of palladium(II) from multicomponent mixtures and hydrogenation catalyst.