Although there are numerous publications describing the toxicology and environmental impact of the better known metals such as lead, cadmium and mercury, information on the less common metals is not as readily available. The Mid-West Research Institute has therefore undertaken a programme initiated by the National Institute of Environmental Health Sciences to assemble information on the natural...

Alloys of platinum and rhodium are extensively used in thermocouples for high-temperature measurement and as clean and inert heating elements in experimental high-temperature furnaces. The phase diagram for the Pt-Rh system is inadequately characterized.[1] The liquidus has been measured by Müller[2] and Acken.[3] The results have been normalized using more recent values for the melting points ...