NF M60-809

NF M60-809

March 2011
Standard Cancelled

Nuclear energy - Measurement of the radioactivity in the environnment - Water - Measurement of lead 210 activity by liquid scintillation in water

Le présent document décrit les conditions de mesurage de l'activité du plomb-210 en scintillation liquide, après une pré-concentration chimique suivie de la séparation radiochimique du plomb-210 par extraction chromatographique sur résine de type éther-couronne.

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Main informations

Collections

National standards and national normative documents

Publication date

March 2011

Number of pages

18 p.

Reference

NF M60-809

ICS Codes

13.060.60   Examination of physical properties of water
17.240   Radiation measurements
27.120.01   Nuclear energy in general

Classification index

M60-809

Print number

1 - 01/03/2011
Sumary
Nuclear energy - Measurement of the radioactivity in the environnment - Water - Measurement of lead 210 activity by liquid scintillation in water

Le présent document décrit les conditions de mesurage de l'activité du plomb-210 en scintillation liquide, après une pré-concentration chimique suivie de la séparation radiochimique du plomb-210 par extraction chromatographique sur résine de type éther-couronne.
Standard replaced by (1)
NF ISO 13163
January 2014
Standard Cancelled
Water quality - Lead 210 - Test method using liquid scintillation counting

<p>ISO 13163 specifies the determination of lead-210 (210Pb) activity concentration in samples of all types of water using liquid scintillation counting (LSC). For raw and drinking water, the sample should be degassed in order to minimize the ingrowth of <sup>210</sup>Pb from radon-222 (<sup>222</sup>Rn).</p> <p>Using currently available liquid scintillation counters, this test method can measure the <sup>210</sup>Pb activity concentrations in the range of less than 20 mBq⋅l<sup>-1</sup> to 50 mBq⋅l<sup>-1</sup>. These values can be achieved with a counting time between 180 min and 720 min for a sample volume from 0,5 l to 1,5 l.</p> <p>Higher <sup>210</sup>Pb activity concentrations can be measured by either diluting the sample or using smaller sample aliquots or both.</p> <p>It is the laboratory's responsibility to ensure the suitability of this test method for the water samples tested.</p>

Table of contents
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  • Introduction
    5
  • 1 Objet et domaine d'application
    6
  • 2 Références normatives
    6
  • 3 Termes et définitions
    7
  • 4 Principe et difficultés de la mesure
    9
  • 5 Matériels
    9
  • 6 Réactifs
    9
  • 6.1 Produits chimiques
    9
  • 6.2 Solution radioactive
    9
  • 7 Échantillonnage
    10
  • 7.1 Prélèvement de l'échantillon
    10
  • 7.2 Conservation de l'échantillon pour analyse
    10
  • 8 Mode opératoire
    10
  • 8.1 Préparation de l'échantillon
    10
  • 8.2 Pré-concentration
    10
  • 8.3 Séparation du plomb-210 :
    11
  • 8.4 Analyse
    12
  • 9 Expression des résultats
    13
  • 9.1 Détermination des rendements
    13
  • 9.2 Calcul de l'activité volumique
    14
  • 9.3 Incertitude relative
    15
  • 9.4 Seuil de décision
    16
  • 9.5 Limite de détection
    16
  • 9.6 Limites de confiance
    16
  • 9.7 Expression des résultats
    17
  • 10 Contrôle de la pureté de la fraction contenant le plomb-210
    17
  • 11 Présentation des résultats
    17
  • Bibliographie
    18
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