Water quality - Radium-226 - Part 2: Test method using emanometry (ISO 13165-2:2014)

ISO 13165-2:2014 specifies the determination of radium-226 (226Ra) activity concentration in all types of water by emanometry. The method specified is suitable for the determination of the soluble, suspended, and total 226Ra activity concentration in all types of water with soluble 226Ra activity concentrations greater than 0,02 Bq l−1. In water containing high activity concentrations of 228Th, interference from 220Rn decay products can lead to overestimation of measured levels.

Wasserbeschaffenheit - Radium 226 - Teil 2: Verfahren mittels Emanometrie (ISO 13165-2:2014)

Dieser Teil von ISO 13165 legt die Bestimmung der Aktivitätskonzentration von Radium 226 (226Ra) in allen Arten von Wasser mittels Emanometrie fest.
Das beschriebene Verfahren eignet sich zur Bestimmung der Gesamtaktivitätskonzentration von löslichem, suspendiertem 226Ra in allen Arten von Wasser mit löslichen 226Ra Aktivitätskonzentrationen von mehr als 0,02 Bq l−1.
In Wasser mit hohen Aktivitätskonzentrationen von 228Th können Störungen durch220Rn Zerfallsprodukte zur Überbewertung der gemessenen Stände führen (siehe Bild A.2).

Qualité de l'eau - Radium 226 - Partie 2: Méthode d'essai par émanométrie (ISO 13165-2:2014)

L'ISO 13165-2:2014 spécifie la détermination de l'activité volumique du radium 226 (226Ra), dans tous types d'eaux par émanométrie.
La méthode spécifiée est applicable pour la détermination de l'activité volumique du 226Ra soluble, total et particulaire dans tous types d'eaux d'activité volumique en 226Ra supérieure à 0,02 Bq l−1.
Dans les eaux fortement chargées en 228Th, l'interférence due aux descendants du 220Rn peut conduire à une surestimation des niveaux mesurés.

Kakovost vode - Radij Ra-226 - 2. del: Preskusna metoda z emanometrijo (ISO 13165-2:2014)

General Information

Status
Published
Publication Date
11-Feb-2020
Technical Committee
Drafting Committee
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
12-Feb-2020
Completion Date
12-Feb-2020

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SLOVENSKI STANDARD
SIST EN ISO 13165-2:2020
01-maj-2020
Kakovost vode - Radij Ra-226 - 2. del: Preskusna metoda z emanometrijo (ISO
13165-2:2014)
Water quality - Radium-226 - Part 2: Test method using emanometry (ISO 13165-
2:2014)
Wasserbeschaffenheit - Radium 226 - Teil 2: Untersuchungsverfahren mittels
Emanometrie (ISO 13165-2:2014)

Qualité de l'eau - Radium 226 - Partie 2: Méthode d'essai par émanométrie (ISO 13165-

2:2014)
Ta slovenski standard je istoveten z: EN ISO 13165-2:2020
ICS:
13.060.60 Preiskava fizikalnih lastnosti Examination of physical
vode properties of water
17.240 Merjenje sevanja Radiation measurements
SIST EN ISO 13165-2:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 13165-2:2020
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SIST EN ISO 13165-2:2020
EN ISO 13165-2
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2020
EUROPÄISCHE NORM
ICS 13.060.60; 17.240
English Version
Water quality - Radium-226 - Part 2: Test method using
emanometry (ISO 13165-2:2014)

Qualité de l'eau - Radium 226 - Partie 2: Méthode Wasserbeschaffenheit - Radium 226 - Teil 2:

d'essai par émanométrie (ISO 13165-2:2014) Untersuchungsverfahren mittels Emanometrie (ISO

13165-2:2014)
This European Standard was approved by CEN on 6 October 2019.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

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© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 13165-2:2020 E

worldwide for CEN national Members.
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SIST EN ISO 13165-2:2020
EN ISO 13165-2:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 13165-2:2020
EN ISO 13165-2:2020 (E)
European foreword

The text of ISO 13165-2:2014 has been prepared by Technical Committee ISO/TC 147 "Water quality”

of the International Organization for Standardization (ISO) and has been taken over as EN ISO 13165-

2:2020 by Technical Committee CEN/TC 230 “Water analysis” the secretariat of which is held by DIN.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by August 2020, and conflicting national standards shall

be withdrawn at the latest by August 2020.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,

Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of

North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the

United Kingdom.
Endorsement notice

The text of ISO 13165-2:2014 has been approved by CEN as EN ISO 13165-2:2020 without any

modification.
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SIST EN ISO 13165-2:2020
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SIST EN ISO 13165-2:2020
INTERNATIONAL ISO
STANDARD 13165-2
First edition
2014-04-15
Water quality — Radium-226 —
Part 2:
Test method using emanometry
Qualité de l’eau — Radium 226 —
Partie 2: Méthode d’essai par émanométrie
Reference number
ISO 13165-2:2014(E)
ISO 2014
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SIST EN ISO 13165-2:2020
ISO 13165-2:2014(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2014

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form

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Published in Switzerland
ii © ISO 2014 – All rights reserved
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SIST EN ISO 13165-2:2020
ISO 13165-2:2014(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms, definitions and symbols ............................................................................................................................................................ 1

3.1 Terms and definitions ....................................................................................................................................................................... 1

3.2 Symbols ......................................................................................................................................................................................................... 2

4 Principle ........................................................................................................................................................................................................................ 2

5 Reagents and equipment ............................................................................................................................................................................. 3

5.1 Reagents........................................................................................................................................................................................................ 3

5.2 Equipment ................................................................................................................................................................................................... 3

6 Sampling and storage ...................................................................................................................................................................................... 4

6.1 Sampling ....................................................................................................................................................................................................... 4

6.2 Sample storage ........................................................................................................................................................................................ 4

7 Procedures .................................................................................................................................................................................................................. 4

7.1 Sample preparation ............................................................................................................................................................................ 4

7.2 Measurement conditions ......... ....................................................................................................................................................... 5

7.3 Counting procedure ............................................................................................................................................................................ 5

8 Quality assurance and quality control programme ......................................................................................................... 5

8.1 General ........................................................................................................................................................................................................... 5

8.2 Influence parameters ........................................................................................................................................................................ 5

8.3 Instrument verification and calibration ............................................................................................................................ 6

8.4 Method verification ............................................................................................................................................................................. 6

8.5 Demonstration of analyst capability .................................................................................................................................... 6

9 Expression of results ........................................................................................................................................................................................ 6

226

9.1 Activity concentration of water-soluble Ra ............................................................................................................ 6

9.2 Standard uncertainty of activity concentration .......................................................................................................... 7

9.3 Limits of the confidence interval ............................................................................................................................................. 8

9.4 Example ......................................................................................................................................................................................................... 8

10 Test report ................................................................................................................................................................................................................... 8

Annex A (informative) Decay chains of uranium-238 and thorium-232......................................................................10

Annex B (informative) Bubbler ...............................................................................................................................................................................12

Annex C (informative) Glass scintillation cell ..........................................................................................................................................14

Bibliography .............................................................................................................................................................................................................................15

© ISO 2014 – All rights reserved iii
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SIST EN ISO 13165-2:2020
ISO 13165-2:2014(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

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different types of ISO documents should be noted. This document was drafted in accordance with the

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Attention is drawn to the possibility that some of the elements of this document may be the subject of

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to Trade (TBT) see the following URL: Foreword - Supplementary information

The committee responsible for this document is ISO/TC 147, Water quality, Subcommittee SC 3,

Radioactivity measurements.

ISO 13165 consists of the following parts, under the general title Water quality — Radium-226:

— Part 1: Test method using liquid scintillation counting
— Part 2: Test method using emanometry
The following parts are under preparation:
— Part 3: Test method using coprecipitation and gamma spectrometry
iv © ISO 2014 – All rights reserved
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SIST EN ISO 13165-2:2020
ISO 13165-2:2014(E)
Introduction

Radioactivity from several naturally occurring and human-made sources is present throughout the

environment. Thus, water bodies (surface waters, ground waters, sea waters) can contain radionuclides

of natural and human-made origins:

Natural radionuclides, including potassium-40, and those of the thorium and uranium decay series, in

particular radium-226, radium-228, uranium-234, uranium-238, and lead-210, can be found in water for

natural reasons (e.g. desorption from the soil and wash-off by rain water) or releases from technological

processes involving naturally occurring radioactive materials (e.g. the mining and processing of mineral

sands or phosphate fertilizer production and use).

Human-made radionuclides such as transuranium elements (americium, plutonium, neptunium, curium),

tritium, carbon-14, strontium-90, and some gamma emitters radionuclides can also be found in natural

waters as they can be authorized to be routinely released into the environment in small quantities in the

effluent discharge from nuclear fuel cycle facilities and following their use in unsealed form in medicine

or industry. They are also found in the water due to the past fallout of the explosion in the atmosphere

of nuclear devices and those following the Chernobyl and Fukushima accidents.

Drinking water can thus contain radionuclides at activity concentration which could present a risk to

human health. In order to assess the quality of drinking water (including mineral waters and spring

waters) with respect to its radionuclide content and to provide guidance on reducing health risks by

taking measures to decrease radionuclide activity concentrations, water resources (groundwater, river,

lake, sea, etc.) and drinking water are monitored for their radioactivity content as recommended by the

World Health Organization (WHO).

The need of a standard on a test method of radium-226 activity concentrations in water samples is

justified for test laboratories carrying out these measurements, required sometimes by national

authorities, as they may have to obtain a specific accreditation for radionuclide measurement in drinking

water samples.

Radium-226 activity concentration can vary widely according to local geological and climatic

−1 −1

characteristics and ranges from 0,001 Bq l in surface waters up to 50 Bq l in natural groundwaters.

The guidance level for radium-226 in drinking water as recommended by WHO is 1 Bq l (see

Reference [11]).

NOTE The guidance level is the activity concentration (rounded to the nearest order of magnitude) with an

-1 -1

intake of 2 l∙d of drinking water for 1 year that results in an effective dose of 0,1 mSv∙y for members of the

public, an effective dose that represents a very low level of risk that is not expected to give rise to any detectable

adverse health effect.

This International Standard is one of a series on determination of the activity concentration of

radionuclides in water samples.
© ISO 2014 – All rights reserved v
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SIST EN ISO 13165-2:2020
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SIST EN ISO 13165-2:2020
INTERNATIONAL STANDARD ISO 13165-2:2014(E)
Water quality — Radium-226 —
Part 2:
Test method using emanometry

WARNING — Persons using this document should be familiar with normal laboratory practice.

This document does not purport to address all of the safety problems, if any, associated with its

use. It is the responsibility of the user to establish appropriate safety and health practices and to

ensure compliance with any national regulatory conditions.

IMPORTANT — It is absolutely essential that tests conducted in accordance with this document

be carried out by suitably qualified staff.
1 Scope
226

This part of ISO 13165 specifies the determination of radium-226 ( Ra) activity concentration in all

types of water by emanometry.
226

The method specified is suitable for the determination of the soluble, suspended, and total Ra activity

226 −1

concentration in all types of water with soluble Ra activity concentrations greater than 0,02 Bq l .

228 220

In water containing high activity concentrations of Th, interference from Rn decay products can

lead to overestimation of measured levels (see Figure A.2).
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

ISO 5667-3, Water quality — Sampling — Part 3: Preservation and handling of water samples

ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories

ISO 80000-10, Quantities and units — Part 10: Atomic and nuclear physics
3 Terms, definitions and symbols
3.1 Terms and definitions

For the purposes of this document, the terms and definitions in ISO 80000-10 and the following apply.

3.1.1
reference measurement standard

measurement standard designated for the calibration of other measurement standards for quantities of

a given kind in a given organization or at a given location
3.1.2
working measurement standard

measurement standard that is used routinely to calibrate or verify measuring instruments or measuring

systems

Note 1 to entry: A working measurement standard can be used as a solution of known activity concentratio

...

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