Abstract
A new, sensitive spectrophotometric determination of palladium has been developed, based on the extraction of the red Pd(II) chelate with 4-(2-pyridylazo)resorcinol in the presence of N,N′-diphenylguanidine into n-butanol; the sensitivity of the method according to Sandell is S = 1.12 μg cm −2, ϵ 530 = 9.4 × 10 4 liters mol −1 cm −1, and palladium can be determined at concentrations from 0.21 to 1.91 μg ml −1.
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