Povučen
The method is based on decomposition of the test portion by hydrochloric acid/nitric acid, evaporation, ignition of the residue and removal of silica, fusion with sodium carbonate and dissolution of the cooled melt in the filtrate, aspiration of the solution into the flame of an atomic absorption spectrometer, and comparison of the absorbance values obtained for aluminium with those obtained from the calibration solutions. Applies to aluminium contents between 0,1 % and 5,0 % in natural iron ores, iron ore concentrates and agglomerates, including sinter products.
POVUČEN
ISO 4688:1980
POVUČEN
ISO 4688-1:1992
95.99
Povučen
22. 3. 2006.
POVUČEN
ISO 4688-1:2006
Rude gvožđa - Određivanje sadržaja aluminijuma - Deo 1: Metoda atomskoapsorpcione spektrometrije sa plamenom (identičan sa ISO 4688-1:1992)
95.99 Povučen