СОВРЕМЕННОЕ СОСТОЯНИЕ И ПРОБЛЕМЫ АНАЛИТИЧЕСКОГО КОНТРОЛЯ ОТРАБОТАННЫХ АВТОМОБИЛЬНЫХ КАТАЛИЗАТОРОВ (ОБЗОР)

Spent autocatalysts hold a specific place among secondary raw materials containing precious metals. Precise determination of platinum metals in spent autocatalysts (SA) plays a very important role affecting the economic efficiency of the utilization process. We generalize the existing methods of analysis of spent autocatalysts presented in the literature and methodological developments of the Institute «Giredmet» in collaboration with the Center «ANSERTECO» and NUST «MISiS» regarding the same problem. The main emphasis is made on the use of modern tools for chemical preparation of hard-to-break object like spent autocatalysts: autoclave and microwave opening of the samples. The advantages of using the assay concentration method based on the developments of the Ekaterinburg Non-Ferrous Metals Processing Plant for analysis of spent autocatalysts are concidered. The atomic emission, atomic absorption and chemical spectroscopic methods of SA analysis have been developed and certified along with the guidelines of their further improvement.