# ISO 4688-1:1992 — Withdrawn and superseded ISO standards

For ISO 4688-1:1992, item title is Iron ores — Determination of aluminium content — Part 1: Flame atomic absorption spectrometric method; status code is 9599; successor is ISO 4688-1:2006; withdrawn / published date is 1992-12-10, recorded from its source on 2026-08-05.

- **Identifier:** ISO 4688-1:1992 _(verified: appears in the quote below)_
- **Item title:** Iron ores — Determination of aluminium content — Part 1: Flame atomic absorption spectrometric method _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 4688-1:2006
- **Withdrawn / published date:** 1992-12-10 _(verified: appears in the quote below)_

## What the source says

> 10670,IS,,ISO 4688-1:1992,Iron ores — Determination of aluminium content — Part 1: Flame atomic absorption spectrometric method,Minerais de fer — Dosage de l'aluminium — Partie 1: Méthode par spectrométrie d'absorption atomique dans la flamme,1992-12-10,1,['73.060.10'],ISO/TC 102/SC 2,9599,[10669],[39726],"['en','fr']",9,"<p>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 aluminiu

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).