# ISO 8299:1993 — Withdrawn and superseded ISO standards

For ISO 8299:1993, item title is Determination of isotopic content and concentration of uranium and plutonium in nitric acid solution — Mass spectrometric method; status code is 9599; successor is ISO 8299:2005; withdrawn / published date is 1993-05-27, recorded from its source on 2026-08-05.

- **Identifier:** ISO 8299:1993 _(verified: appears in the quote below)_
- **Item title:** Determination of isotopic content and concentration of uranium and plutonium in nitric acid solution — Mass spectrometric method _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 8299:2005
- **Withdrawn / published date:** 1993-05-27 _(verified: appears in the quote below)_

## What the source says

> 15419,IS,,ISO 8299:1993,Determination of isotopic content and concentration of uranium and plutonium in nitric acid solution — Mass spectrometric method,Détermination de la teneur isotopique et chimique en uranium et plutonium d'une solution d'acide nitrique — Méthode par spectrométrie de masse,1993-05-27,1,['27.120.30'],ISO/TC 85/SC 5,9599,,[34543],"['en','fr']",14,"<p>The method is based on isotope ratio measurements in solutions by thermal ionization mass spectrometry. Includes the following steps: dilution, spike addition, isotope exchange chemistry, ion exchange purification/separation, preparation of filaments, mass spectrometric measurements and calculation of isotopic and elemental c

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).