Abstract
An excellent procedure for the quantitative determination of micro- and milligram amounts of palladium is given, in which it is precipitated as the insoluble diiodide and the excess of iodide is back titrated with mercury(II) using silver amalgam as the indicator electrode. All inert cations towards iodide do not interfere. Ferric iron and copper(II) are masked with citrate. The method is sensitive to a minimum of 1.65 ppm of palladium determined with a potential break of 140 mV/0.1 ml of 2.45 × 10 −4 M titrant. Binary and ternary mixtures are successfully analyzed by aid of the present method, masking agents, and additional volumetric procedures.
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