ISO 10203:1992
Iron ores -- Determination of calcium content -- Flame atomic absorption spectrometric method
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 calcium with those obtained from the calibration solutions. Applies to calcium contents between 0,01 % and 10,0 % in natural iron ores, iron ore concentrates and agglomerates, including sinter products.
General information
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Status : WithdrawnPublication date : 1992-12
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Edition : 1
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- ICS :
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Iron ores
Life cycle
A standard is reviewed every 5 years
Revisions / Corrigenda
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Previously
ISO 4692:1980
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Now withdrawn
ISO 10203:1992 -
Revised by
ISO 10203:2006
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