Complex of solvent extraction-atomic emission and absorption methods of high-purity noble-metal analysis

Solvent extraction-atomic-emission and atomic-absorption methods of analysis of gold, silver, palladium, platinum, rhodium of high purity are considered. It is shown that both methods for the majority of the impurity elements determined (alkali alkaline earth, rare earth, transition elements, B, Cd, In, Te, etc.) ensure determination limits, which are in no way inferior to the spark mass-spectrometry. The use of atomic emission determination of impurities after their preliminary concentration by the method of solvent extraction is the most efficient one in aqueous phase and that of the atomic absorption method - in organic phase. 18 refs.; 2 figs.; 5 tabs