In view of the scarcity of resources and rising prices, the significance of the recycling of raw materials is becoming increasingly important. This is true for the recycling of electronic waste. In addition to the element copper, several other elements, in particular precious metals, are of interest. Due to the high price of precious metals reliable, accurate and precise analytics are of great interest, in order to avoid disputes between suppliers and customers. For this reason, a few years ago BAM launched the certified reference material ERM®-EZ505, which is no longer available. The aim of the certification of the reference material BAM-M505a was to produce a suitable successor material in which the mass fractions of the precious metals silver, gold, platinum and palladium could be certified with low uncertainty. In addition, the mass fractions of the elements copper, nickel, lead, chromium, tin, arsenic, beryllium and cadmium were certified. For Indium an informative value is given. For the production of the certified reference material electronic scrap was shredded and melted with pyrite ("stoned"). The material thus obtained was in turn comminuted and ground to a particle size of 0.2 mm.
The material is available as a powder in glass bottles with 200 g content. It can be used as a tool for the analysis of precious metals in laboratories to verify and validate their analytical methods.
BAM-M505a report
Info: Inorganic Reference Materials, Dr. Sebastian Recknagel
2019/08/05