FprEN ISO 13165-3
(Main)Water quality - Radium-226 - Part 3: Test method using coprecipitation and gamma-spectrometry (ISO/FDIS 13165-3:2024)
Water quality - Radium-226 - Part 3: Test method using coprecipitation and gamma-spectrometry (ISO/FDIS 13165-3:2024)
ISO 13165-3:2016 specifies the determination of radium-226 (226Ra) activity concentration in all types of water by coprecipitation followed by gamma-spectrometry (see ISO 18589‑3).
The method described is suitable for determination of soluble 226Ra activity concentrations greater than 0,02 Bq l−1 using a sample volume of 1 l to 100 l of any water type.
For water samples smaller than a volume of 1 l, direct gamma-spectrometry can be performed following ISO 10703 with a higher detection limit.
NOTE This test method also allows other isotopes of radium, 223Ra, 224Ra, and 228Ra, to be determined.
Wasserbeschaffenheit - Radium-226 - Teil 3: Verfahren mittels Kopräzipitation und Gammaspektrometrie (ISO/FDIS 13165-3:2024)
Qualité de l'eau - Radium 226 - Partie 3: Méthode d'essai par co-précipitation et spectrométrie gamma (ISO/FDIS 13165-3:2024)
L'ISO 13165-3:2016 spécifie la détermination de l'activité volumique du radium 226 (226Ra), dans tous les types d'eaux par coprécipitation suivie d'une spectrométrie gamma (voir l'ISO 18589‑3).
La méthode décrite est applicable pour la détermination de l'activité volumique du 226Ra soluble ayant une activité volumique en 226Ra supérieure à 0,02 Bq l−1 en utilisant un volume d'échantillon compris entre 1 l et 100 l de tout type d'eau.
Pour des échantillons d'eau inférieurs à un volume de 1 l, la spectrométrie gamma directe peut être effectuée en se conformant à l'ISO 10703 avec une limite de détection supérieure.
NOTE Cette méthode d'essai permet également le mesurage d'autres isotopes du radium (223Ra, 224Ra et 228Ra).
Kakovost vode - Radij Ra-226 - 3. del: Preskusna metoda s soobarjanjem in gama spektrometrijo (ISO/DIS 13165-3:2023)
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Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2023
Kakovost vode - Radij Ra-226 - 3. del: Preskusna metoda s soobarjanjem in gama
spektrometrijo (ISO/DIS 13165-3:2023)
Water quality - Radium-226 - Part 3: Test method using coprecipitation and gamma-
spectrometry (ISO/DIS 13165-3:2023)
Wasserbeschaffenheit - Radium-226 - Teil 3: Verfahren mittels Kopräzipitation und
Gammaspektrometrie (ISO/DIS 13165-3:2023)
Qualité de l'eau - Radium 226 - Partie 3: Méthode d'essai par co-précipitation et
spectrométrie gamma (ISO/DIS 13165-3:2023)
Ta slovenski standard je istoveten z: prEN ISO 13165-3
ICS:
13.060.60 Preiskava fizikalnih lastnosti Examination of physical
vode properties of water
17.240 Merjenje sevanja Radiation measurements
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT INTERNATIONAL STANDARD
ISO/DIS 13165-3
ISO/TC 147/SC 3 Secretariat: AFNOR
Voting begins on: Voting terminates on:
2023-03-16 2023-06-08
Water quality — Radium-226 —
Part 3:
Test method using coprecipitation and gamma-
spectrometry
Qualité de l'eau — Radium 226 —
Partie 3: Méthode d'essai par coprécipitation et spectrométrie gamma
ICS: 17.240; 13.060.60
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
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ISO/DIS 13165-3:2023(E)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 13165-3
ISO/TC 147/SC 3 Secretariat: AFNOR
Voting begins on: Voting terminates on:
Water quality — Radium-226 —
Part 3:
Test method using coprecipitation and gamma-
spectrometry
Qualité de l'eau — Radium 226 —
Partie 3: Méthode d'essai par coprécipitation et spectrométrie gamma
ICS: 17.240; 13.060.60
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
© ISO 2023
ISO/CEN PARALLEL PROCESSING
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ii
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2023
ISO/DIS 13165-3:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 2
5 Principle of the measurement .3
6 Reagents and equipment . 3
6.1 Reagents . 3
6.2 Equipment . 4
7 Sampling . 4
7.1 Sample collection . . . 4
7.2 Sample transport and storage . 4
8 Procedures . 5
8.1 Blank sample preparation . 5
8.2 Sample preparation . 5
8.3 Counting procedure . 5
9 Quality assurance and quality control programme . 6
9.1 General . 6
9.2 Influence quantities . 6
9.3 Method verification . 6
9.4 Demonstration of analyst capability . 6
10 Expression of results . 7
10.1 General . 7
10.2 Water-soluble Ra activity concentration . 7
10.3 Standard uncertainty of activity concentration . 7
10.4 Decision threshold . 8
10.5 Detection limit . 8
10.6 Limits of the coverage intervals . . 8
10.6.1 Limits of the probabilistically symmetric coverage interval . 8
10.6.2 The shortest coverage interval . 9
10.7 Corrections for contributions from other radionuclides and background . 9
10.7.1 General . 9
10.7.2 Contribution from other radionuclides . 10
10.7.3 Contribution from background . 11
11 Test report .11
Annex A (informative) Uranium, Thorium and Neptunium and their decay chains .13
Bibliography .15
iii
ISO/DIS 13165-3:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
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described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
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This document was prepared by Technical Committee ISO/TC 147 Water quality, Subcommittee SC 3,
Radioactivity measurements.
This second edition cancels and replaces the first edition (ISO 13165-3:2016), which has been
technically revised.
The main changes are as follows:
— complete revision of the introduction
— the principal of measurement (Clause 5) was expanded
— the instrument verification (formerly subclause 9.3) was deleted
— formulae for the coverage intervals according to ISO 11929 series were updated
— requirements of the test report were updated
A list of all parts in the ISO 13165 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
ISO/DIS 13165-3:2023(E)
Introduction
Radionuclides are present throughout the environment; thus, water bodies (e.g., surface waters, ground
waters, sea waters) contain radionuclides, which can be of either natural or anthropogenic origin:
3 14 40
— naturally-occurring radionuclides, including H, C, K and those origin
...
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