ISO 10203:1992
Iron ores; determination of calcium content; flame atomic absorption spectrometric method

Standard No.

ISO 10203:1992

Release Date

1992

Published By

International Organization for Standardization (ISO)

Status

Withdraw

Replace By

ISO 10203:2006

Latest

ISO 10203:2017

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.

ISO 10203:1992 history

• 2017 ISO 10203:2017 Iron ores - Determination of calcium - Flame atomic absorption spectrometric method
• 2015 ISO 10203:2015 Iron ores - Determination of calcium - Flame atomic absorption spectrometric method
• 2006 ISO 10203:2006 Iron ores - Determination of calcium - Flame atomic absorption spectrometric method
• 1992 ISO 10203:1992 Iron ores; determination of calcium content; flame atomic absorption spectrometric method