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Determination of high concentrations of palladium by combined use of gravimetric and spectral analysis

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A method of determination of palladium is developed which combines precipitation of palladium with dimethylglyoxime, recovery of weighed form of metallic palladium, and subsequent determination of coprecipitated impurities in an isolated precipitate by atomic emission spectrometry with inductively coupled plasma and arc sources of excitation with the aim of introducing a correction into the results of gravimetric analysis. The evaluation of the error of palladium determination by the proposed scheme characterized as the total error of two independent stages of analysis (gravimetry and atomic emission spectrometry), which have different metrological characteristics, is performed. The total error of analysis in determination of the threshold concentrations of impurities in the separated palladium precipitate does not exceed the error characteristic of gravimetric analysis (RSD ≈ 0.2–0.5%). The given scheme makes it possible to substantially reduce the labor intensity and time of analysis compared to the classical scheme of gravimetric analysis.

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Correspondence to T. M. Malyutina.

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Original Russian Text © T.M. Malyutina, B.V. Shneider, T.Yu. Alekseeva, Yu.A. Karpov, 2012, published in Zavodskaya Laboratoriya. Diagnostika Materialov, 2012, Vol. 78, No. 4, pp. 4–9.

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Malyutina, T.M., Shneider, B.V., Alekseeva, T.Y. et al. Determination of high concentrations of palladium by combined use of gravimetric and spectral analysis. Inorg Mater 49, 1277–1282 (2013).

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