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Spectrophotometric determination of platinum metals. V. Determination of palladium with Pyrogallol Red

L. Čermáková, I. Fantová, and V. Suk

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


Abstract: The spectrophotometric detn. of Pd with pyrogallol red is described. Its high sensitivity depends on the presence of micellar system of 1-carbethoxypentadecyltrimethylammonium bromide, which leads to the max. color formation in acid solns. (pH 5.5) in a shorter time interval than in the absence of the surfactant. The ternary Pd-dye-cation-active-surfactant system obeys Beer's law over the range 0.20-3.70 μg  ml-1 Pd(II) with a Sandell sensitivity of 4 × 10-3 μg cm-2 and a molar absorptivity of 2.6 × 104 l mol-1 cm-1 at the max. of the differential curve at 620 nm.

Full paper in Portable Document Format: 343a357.pdf


Chemical Papers 34 (3) 357–363 (1980)

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