This standard was last reviewed* in 2012.
The principle of the method specified is heating a weighed quantity of homogenized sample in a clean platinum basin, removing the combustible material by burning, finally removing the carbon by heating, fusing the residue with a dilithium tetraborate/lithium fluoride flux, digesting the fused mixture in a solution of tartaric acid and hydrochloric acid, dilution to volume with water, measuring the solution by ICPES or AAS. The method is applicable for concentrations between 5 mg/kg and 150 mg/kg for aluminium and 10 mg/kg and 250 mg/kg for silicon.
Edition: 1 (Monolingual) ICS: 75.160.20 Status: Published Stage: 90.93 (2012-04-23) TC/SC: ISO/TC 28 Number of Pages: 7
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