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ISO 10203:1992

Iron ores — Determination of calcium content — Flame atomic absorption spectrometric method

95.99 Withdrawal of Standard   Aug 20, 2007

General information

95.99     Aug 20, 2007

ISO

ISO/TC 102/SC 2

International Standard

73.060.10  

Scope

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.

Life cycle

PREVIOUSLY

Revises
ISO 4692:1980

NOW

WITHDRAWN
ISO 10203:1992
95.99 Withdrawal of Standard
Aug 20, 2007

REVISED BY

WITHDRAWN
ISO 10203:2006

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