Summary
Palladium can be determined volumetrically after separation with α-picolinic or quinaldinic acid by dissolving the complex in an excess of standard potassium cyanide solution and back-titrating the excess of the cyanide by standard silver nitrate solution, potassium iodide being used as the indicator. The method is very rapid and quite satisfactory. With α-picolinic acid only 2 to 15 mg of palladium can be determined accurately and in the case of quinaldinic acid the amount of palladium that can be estimated is from 2 to 8 mg. Higher amounts of palladium give results slightly lower than the theoretical values.
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References
Majumdar, A. K., and J. G. Sen Gupta: Z. analyt. Chem. 161, 100 (1958).
Majumdar, A. K., and J. G. Sen Gupta: Z. analyt. Chem. 161, 104 (1958).
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Majumdar, A.K., Sen Gupta, J.G. α-Picolinic acid and quinaldinic acid in the separation and volumetric determination of palladium. Z. Anal. Chem. 161, 179–181 (1958). https://doi.org/10.1007/BF00451009
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DOI: https://doi.org/10.1007/BF00451009