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Norm
ISO 10203:1992
Issue date: 1992 12 10
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 ...
Withdrawn: 2007 08 20
Publisher:
International Organization for Standardization
Format:
Digital | 9 Pages
Language:
English
Currently valid:
ICS
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.
ISO 10203:2017
2017 03 29
Iron ores — Determination of calcium — Flame atomic absorption spectrometric method
Norm
ISO 10203:2015
2015 06 19
Iron ores — Determination of calcium — Flame atomic absorption spectrometric method
Norm
ISO 10203:2006
2006 06 14
Iron ores — Determination of calcium — Flame atomic absorption spectrometric method
Norm
ISO 10203:1992
1992 12 10
Iron ores — Determination of calcium content — Flame atomic absorption spectrometric method
Norm
↖
ISO 4692:1980
1980 06 01
Iron ores — Determination of calcium and/or magnesium contents — Flame atomic absorption spectrometr...
Norm
Norm
Issue date :
2006 06 14
Iron ores — Determination of calcium — Flame atomic absorption spectrometric method
