# ISO 9684:1991 — Withdrawn and superseded ISO standards For ISO 9684:1991, item title is Iron ores — Determination of vanadium content — Flame atomic absorption spectrometric methods; status code is 9599; successor is ISO 9683-2:2009; withdrawn / published date is 1991-10-17, recorded from its source on 2026-08-05. - **Identifier:** ISO 9684:1991 _(verified: appears in the quote below)_ - **Item title:** Iron ores — Determination of vanadium content — Flame atomic absorption spectrometric methods _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 9683-2:2009 - **Withdrawn / published date:** 1991-10-17 _(verified: appears in the quote below)_ ## What the source says > 17539,IS,,ISO 9684:1991,Iron ores — Determination of vanadium content — Flame atomic absorption spectrometric methods,Minerais de fer — Détermination du vanadium — Méthodes par spectrométrie d'absorption atomique dans la flamme,1991-10-17,1,['73.060.10'],ISO/TC 102/SC 2,9599,,[45322],"['en','fr']",11,"

Specifies two methods: method 1 is applicable to vanadium contents between 0,005 % and 0,05 %, and method 2 to vanadium contents between 0,05 % and 0,5 %. Annex A forms an integral part of this standard. Annexes B and C are for information only.

" ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).