NF ISO 11704
Water quality - Measurement of gross alpha and beta activity concentration in non-saline water - Liquid scintillation counting method
ISO 11704:2010 specifies a method for the determination of gross alpha and gross beta activity in waters for radionuclides which are not volatile at 80 °C. Radon isotopes and their decay products of short half life are not included in the determination. The method is applicable to raw and potable waters with a dry residue less than 5 g/l and when no correction for colour quenching is necessary.
ISO 11704:2010 specifies a method for the determination of gross alpha and gross beta activity in waters for radionuclides which are not volatile at 80 °C. Radon isotopes and their decay products of short half life are not included in the determination.
The method is applicable to raw and potable waters with a dry residue less than 5 g/l and when no correction for colour quenching is necessary.
<p>ISO 11704:2010 specifies a method for the determination of gross alpha and gross beta activity in waters for radionuclides which are not volatile at 80 °C. Radon isotopes and their decay products of short half life are not included in the determination.</p> <p>The method is applicable to raw and potable waters with a dry residue less than 5 g/l and when no correction for colour quenching is necessary.</p>
- Avant-proposiv
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1 Domaine d'application1
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2 Références normatives1
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3 Symboles, définitions et unités2
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4 Principe2
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5 Réactifs et matériel3
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6 Prélèvement4
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7 Mode opératoire5
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7.1 Comptage direct5
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7.2 Préconcentration thermique5
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7.3 Préparation de l'échantillon5
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7.4 Mesurage par scintillation liquide6
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8 Expression des résultats8
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8.1 Calcul de l'activité par unité de masse8
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8.2 Incertitude-type8
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8.3 Seuil de décision9
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8.4 Limite de détection9
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8.5 Limites de l'intervalle de confiance10
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8.6 Contrôle de la qualité10
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9 Contrôle de l'interférence10
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9.1 Contamination10
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9.2 Accroissement du radon11
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9.3 Perte du polonium11
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10 Rapport d'essai11
- Bibliographie12
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