NF EN ISO 22908

NF EN ISO 22908

February 2020
Standard Current

Water quality - Radium 226 and radium 228 - Test method using liquid scintillation counting

This document specifies the determination of radium-226 (226Ra) and radium-228 (228Ra) activity concentrations in drinking water samples by chemical separation of radium and its measurement using liquid scintillation counting. Massic activity concentrations of 226Ra and 228Ra which can be measured by this test method utilizing currently available liquid scintillation counters go down to 0,01 Bq/kg for 226Ra and 0,06 Bq/kg for 228Ra for a 0,5 kg sample mass and a 1 h counting time in a low background liquid scintillation counter[8]. The test method can be used for the fast detection of contamination of drinking water by radium in emergency situations.

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Main informations

Collections

National standards and national normative documents

Publication date

February 2020

Number of pages

38 p.

Reference

NF EN ISO 22908

ICS Codes

13.060.60   Examination of physical properties of water
17.240   Radiation measurements

Classification index

M60-835

Print number

1

International kinship

ISO 22908:2020

European kinship

EN ISO 22908:2020
Sumary
Water quality - Radium 226 and radium 228 - Test method using liquid scintillation counting

This document specifies the determination of radium-226 (226Ra) and radium-228 (228Ra) activity concentrations in drinking water samples by chemical separation of radium and its measurement using liquid scintillation counting.

Massic activity concentrations of 226Ra and 228Ra which can be measured by this test method utilizing currently available liquid scintillation counters go down to 0,01 Bq/kg for 226Ra and 0,06 Bq/kg for 228Ra for a 0,5 kg sample mass and a 1 h counting time in a low background liquid scintillation counter[8].

The test method can be used for the fast detection of contamination of drinking water by radium in emergency situations.

Table of contents
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  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes, définitions, symboles et unités
  • 4 Principe
  • 5 Réactifs et équipement
  • 6 Échantillonnage
  • 7 Réglage et étalonnage de l'instrument
  • 8 Mode opératoire
  • 9 Contrôle qualité
  • 10 Expression des résultats
  • 11 Contrôle de l'interférence
  • 12 Rapport d'essai
  • Annexe A Organigramme de mode opératoire d'essai
  • Annexe B Chaînes de désintégration concernant les isotopes du radium
  • Annexe C Paramètres et mode opératoire de réglage
  • Annexe D Données de validation
  • Bibliographie
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