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Spectrophotometry determination of the platinum metals VIII. Highly sensitive extraction determination of palladium with 4-(2-pyridylazo)resorcinoI in the presence of cetylpyridinium bromide

O. Coufalová and L. Čermáková

Department of Analytical Chemistry, Faculty of Natural Sciences, Charles University, CS-128 40 Prague


Abstract: The formation of the red chelates of palladium with 4-(2-pyridylazo)- resorcinol in the presence of the cationogennic tenside cetylpyridinium bromide is used to develop a highly sensitive extraction spectrophotometric method for the determination of Pd(II). The best results (ε540nm = 9.16 x x 104 dm3 mol-1 cm-1 , S = 1.16 x 10-3 (μg Pd(II) cm-2 , determination of mass concentrations to 1.9 μg Pd(II) cm-3 were obtained with extraction of a solution of palladium(II) salt using a chloroform solution of a mixture of PAR—СРВ, where the coloured product is stable for 7 h.

Full paper in Portable Document Format: 391a83.pdf


Chemical Papers 39 (1) 83–90 (1985)

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