PROCESS OF MANUFACTURE OF COMPARISON SAMPLES FOR X-RAY FLUORESCENT DETERMINATION OF PLATINUM IN COMPOUNDS WITH EULITINUM STRUCTURE (BiMO) Russian patent published in 1997 - IPC

FIELD: analysis of materials. SUBSTANCE: invention refers to manufacture of samples for X-ray fluorescent analysis of materials based on complex oxide compounds. In agreement with proposed process of determination of platinum in compounds with eulitium structure (Bi₄MIV3

O₁₂) specified quantities of components, one of which is oxide containing bismuth are mixed and melted in presence of platinum to manufacture comparison samples. For component mixing boron oxide and specified quantity of bismuth cadmate Bi₁₀Cd₃O₁₈ in which platinum with known quantitative content is present are added. Content of bismuth in mixture is kept constant corresponding to content of bismuth in germanoeulitinum Bi₄Ge₃O₁₂ and equal to W(Bi)=67.11 per cent by mass by change of quantity of injected bismuth-containing oxide with following proportion of components in sample: W(Pt)=0.005-0.10 per cent by mass; W(Bi₁₀Cd₃O₁₈)-1.85-37.04 per cent by mass; W(B₂O₃)=24.92-18.85 per cent by mass up to 100 per cent by mass of bismuth-containing oxide. EFFECT: improved authenticity of process. 2 tbl