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ISO 4688-1:1992

Iron ores — Determination of aluminium content — Part 1: Flame atomic absorption spectrometric method

Dec 10, 1992
95.99   Withdrawal of Standard   Mar 22, 2006

General information

95.99     Mar 22, 2006

ISO

ISO/TC 102/SC 2

International Standard

73.060.10  

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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 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.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 4688:1980

NOW

WITHDRAWN
ISO 4688-1:1992
95.99 Withdrawal of Standard
Mar 22, 2006

REVISED BY

WITHDRAWN
ISO 4688-1:2006

National adoptions

SRPS ISO 4688-1:1997  
ISS

Iron ores — Determination of aluminium content — Part 1: Flame atomic absorption spectrometric method

95.99   Withdrawal of Standard

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