# ISO 6831:1986 — Withdrawn and superseded ISO standards For ISO 6831:1986, item title is Iron ores — Determination of sodium and/or potassium contents — Flame atomic absorption spectrometric method; status code is 9599; successor is ISO 13312:1997 | ISO 13313:1997; withdrawn / published date is 1986-09-25, recorded from its source on 2026-08-05. - **Identifier:** ISO 6831:1986 _(verified: appears in the quote below)_ - **Item title:** Iron ores — Determination of sodium and/or potassium contents — Flame atomic absorption spectrometric method _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 13312:1997 | ISO 13313:1997 - **Withdrawn / published date:** 1986-09-25 _(verified: appears in the quote below)_ ## What the source says > 13339,IS,,ISO 6831:1986,Iron ores — Determination of sodium and/or potassium contents — Flame atomic absorption spectrometric method,Minerais de fer — Dosage du sodium et/ou du potassium — Méthode par spectrométrie d'absorption atomique dans la flamme,1986-09-25,1,['73.060.10'],ISO/TC 102/SC 2,9599,,"[21682,21683]","['en','fr']",9, ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).