نتایج جستجو برای: platinum group elements
تعداد نتایج: 1249980 فیلتر نتایج به سال:
BACKGROUND Over the past two decades there has been a substantial increase in environmental levels of palladium, platinum, and rhodium, the platinum group elements (PGEs), due to the widespread use of catalytic converters for automotive traction. AIM To evaluate urinary platinum levels in occupationally exposed subjects. METHODS A total of 161 employees from the Rome City Police Force were ...
Chromitites associated with strongly altered peridotite from six distinct localities in the Santa Elena ultramafic nappe (Costa Rica) have been investigated for the first time. Santa Elena chromitites commonly display a compositional variation from extremely chromiferous (Cr/(Cr+Al)=0.81) to intermediate and aluminous (Cr/(Cr+Al)=0.54). This composition varies along a continuous trend, correspo...
At the Japan Atomic Energy Research Institute (JAERI), a partitioning process has been developed to separate elements in a high-level liquid waste (HLLW) into four groups; transuranium elements (TRU), Tc-platinum group metals (PGM), Sr-Cs and the others. The present paper deals with objects of the partitioning, main characteristics of four group partitioning process, generation of solid materia...
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