Analysis of refractory materials for metallurgy by the ICP-AES method

A technique for determining oxides of aluminum, iron (III), calcium, magnesium, and chromium (III) at a level of 2–205 μg/l by the ICP-AES method is described. The absence of the effect of components of the matrix (Al₂O₃, MgO) and fluxes (Na, K) used for decomposition of analyzable samples on the intensity of an analytical signal is shown. Methods of sample decomposition by alloying are compared depending on the composition of refractories.