scope:

This part of ISO 21587 specifies inductively coupled plasma/atomic emission (ICP/AE) spectrometry and flame atomic absorption (FAA) spectrometry methods for the chemical analysis of aluminosilicate refractory products and raw materials. The methods are applicable to the determination of the following: - silicon(IV) oxide (SiO2); - aluminium oxide (Al2O3); - iron(III) oxide (total iron oxide calculated as Fe2O3); - titanium(IV) oxide (TiO2); - manganese(II) oxide (MnO); - calcium oxide (CaO); - magnesium oxide (MgO); - sodium oxide (Na2O); - potassium oxide (K2O); - chromium(III) oxide (Cr2O3); - zirconium oxide (ZrO2); - phosphorous(V) oxide (P2O5). This part of ISO 21587 gives alternatives to the X-ray flluorescence (XRF) method given in ISO 12677:2003, Chemical analysis of refractory products by XRF - Fused cast bead method.