EN ISO 13161:2020

Water quality - Polonium 210 - Test method using alpha spectrometry (ISO 13161:2020)

This document specifies a method for the measurement of 210Po in all types of waters by alpha spectrometry.
The method is applicable to test samples of supply/drinking water, rainwater, surface and ground water, marine water, as well as cooling water, industrial water, domestic, and industrial wastewater after proper sampling and handling, and test sample preparation. Filtration of the test sample may be required.
The detection limit depends on the sample volume, the instrument used, the counting time, the background count rate, the detection efficiency and the chemical yield. The method described in this document, using currently available alpha spectrometry apparatus, has a detection limit of approximately 5 mBq l−1, which is lower than the WHO criteria for safe consumption of drinking water (100 mBq l−1). This value can be achieved with a counting time of 24 h for a sample volume of 500 ml.
The method described in this document is also applicable in an emergency situation.
The analysis of 210Po adsorbed to suspended matter in the sample is not covered by this method.
If suspended material has to be removed or analysed, filtration using a 0,45 μm filter is recommended. The analysis of the insoluble fraction requires a mineralization step that is not covered by this document [13]. In this case, the measurement is made on the different phases obtained. The final activity is the sum of all the measured activity concentrations.
It is the user's responsibility to ensure the validity of this test method for the water samples tested.

Wasserbeschaffenheit - Polonium-210 - Verfahren mittels Alphaspektrometrie (ISO 13161:2020)

Dieses Dokument legt ein Verfahren zur Messung von 210Po mittels Alphaspektrometrie in allen Wasserarten fest.
Das Verfahren ist auf Messproben von Versorgungs /Trinkwasser, Regenwasser, Oberflächen  und Grundwasser, Meerwasser sowie Kühlwasser, Prozesswasser, häusliches und gewerbliches Abwasser nach geeigneter Probenahme, Probenbehandlung und Vorbereitung der Messprobe anwendbar. Eine Filtration der Messprobe kann erforderlich sein.
Die Nachweisgrenze hängt von folgenden Parametern ab: Probenvolumen, verwendetes Messinstrument, Zähldauer, Zählrate des Nulleffekts, Zählausbeute und chemische Ausbeute. Das in diesem Dokument beschriebene Verfahren hat, bei Verwendung derzeit verfügbarer Alphaspektrometer, eine Nachweisgrenze von etwa 5 mBq . l−1; diese liegt damit unter den WHO Kriterien für den sicheren Verzehr von Trinkwasser (100 mBq  l−1). Dieser Wert kann mit einer Messdauer von 24 h bei einem Probenvolumen von 500 ml erreicht werden.
Das in diesem Dokument beschriebene Verfahren ist auch in Notfallsituationen anwendbar.
Die Analyse von 210Po, das an Schwebstoffen der Probe adsorbiert ist, wird durch dieses Verfahren nicht abgedeckt.
Für den Fall, dass Schwebstoffe entfernt oder analysiert werden müssen, wird eine Filtration einem Filter der Porengröße 0,45 µm empfohlen. Die Analyse unlöslicher Bestandteile erfordert einen Mineralisierungsschritt, der in diesem Dokument nicht behandelt wird [13]. In diesem Fall wird die Bestimmung mit den unterschiedlichen erhaltenen Phasen durchgeführt. Die endgültige Aktivität ist dann die Summe aller gemessenen Aktivitätskonzentrationen.
Es liegt in der Verantwortung des Anwenders, die Validität dieses Prüfverfahrens für die zu prüfenden Wasserproben sicherzustellen.

Qualité de l'eau - Polonium 210 - Méthode d'essai par spectrométrie alpha (ISO 13161:2020)

Le présent document décrit une méthode pour le mesurage par spectrométrie alpha du 210Po dans tous les types d'eaux.
Cette méthode s'applique aux échantillons pour essai d'eau courante et d'eau potable, d'eau de pluie, d'eau de surface et d'eau souterraine, d'eau de mer, ainsi que d'eau de refroidissement, d'eau industrielle, ou encore d'eaux usées domestiques et industrielles, après échantillonnage et manipulation puis préparation des échantillons pour essai dans des conditions appropriées. Une filtration de l'échantillon peut être nécessaire.
La limite de détection dépend du volume de l'échantillon, de l'instrument utilisé, du temps de comptage, du taux de comptage du bruit de fond, du rendement de détection et du rendement chimique. La méthode décrite dans le présent document, qui recourt à l'utilisation d'un appareil de spectrométrie alpha usuel, présente une limite de détection d'environ 5 mBq l−1, ce qui est inférieur aux critères de l'OMS pour une consommation sûre d'eau potable (100 mBq l−1). Cette valeur peut être obtenue avec un temps de comptage de 24 h pour un volume d'échantillon de 500 ml.
La méthode décrite dans le présent document est également applicable dans les situations d'urgence.
L'analyse du 210Po adsorbé sur les matières en suspension dans l'échantillon n'est pas couverte par la présente méthode.
S'il est nécessaire de séparer les matières en suspension ou de les analyser, une filtration à l'aide d'un filtre à porosité de 0,45 µm est recommandée. L'analyse de la fraction insoluble nécessite une étape de minéralisation qui n'est pas couverte par le présent document[13]. Dans ce cas, le mesurage est effectué sur les différentes phases obtenues. L'activité finale est la somme de toutes les activités volumiques mesurées.
Il incombe à l'utilisateur de s'assurer de la validité de la présente méthode d'essai pour les échantillons d'eau soumis à essai.

Kakovost vode - Polonij Po-210 - Preskusna metoda z alfa spektrometrijo (ISO 13161:2020)

General Information

• Status: Published
• Publication Date: 01-Sep-2020
• Withdrawal Date: 30-Mar-2021
• ICS: 13.060.60 - Examination of physical properties of water
• ICS: 17.240 - Radiation measurements
• Technical Committee: CEN/TC 230 - Water analysis
• Drafting Committee: CEN/TC 230 - Water analysis
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 02-Sep-2020
• Completion Date: 02-Sep-2020
• Ref Project: SIST EN ISO 13161:2021 - Water quality - Polonium 210 - Test method using alpha spectrometry (ISO 13161:2020)

Relations

• Replaces: EN ISO 13161:2015 - Water quality - Measurement of polonium 210 activity concentration in water by alpha spectrometry (ISO 13161:2011)
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2021
Nadomešča:
SIST EN ISO 13161:2016
SIST ISO 13161:2013
Kakovost vode - Polonij Po-210 - Preskusna metoda z alfa spektrometrijo (ISO
13161:2020)
Water quality - Polonium 210 - Test method using alpha spectrometry (ISO 13161:2020)
Wasserbeschaffenheit - Polonium-210 - Verfahren mittels Alphaspektrometrie (ISO
13161:2020)
Qualité de l'eau - Polonium 210 - Méthode d'essai par spectrométrie alpha (ISO
13161:2020)
Ta slovenski standard je istoveten z: EN ISO 13161:2020
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.

EN ISO 13161
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2020
EUROPÄISCHE NORM
ICS 13.060.60; 17.240 Supersedes EN ISO 13161:2015
English Version
Water quality - Polonium 210 - Test method using alpha
spectrometry (ISO 13161:2020)
Qualité de l'eau - Polonium 210 - Méthode d'essai par Wasserbeschaffenheit - Polonium-210 - Verfahren
spectrométrie alpha (ISO 13161:2020) mittels Alphaspektrometrie (ISO 13161:2020)
This European Standard was approved by CEN on 16 June 2020.

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
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of 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
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 13161:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 13161:2020) has been prepared by Technical Committee ISO/TC 147 "Water
quality" in collaboration with 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 March 2021, and conflicting national standards shall
be withdrawn at the latest by March 2021.
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.
This document supersedes EN ISO 13161:2015.
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 13161:2020 has been approved by CEN as EN ISO 13161:2020 without any modification.

INTERNATIONAL ISO
STANDARD 13161
Second edition
2020-07
Water quality — Polonium 210 — Test
method using alpha spectrometry
Qualité de l'eau — Polonium 210 — Méthode d'essai par
spectrométrie alpha
Reference number
ISO 13161:2020(E)
©
ISO 2020
ISO 13161:2020(E)
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
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Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved

ISO 13161:2020(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, symbols and abbreviated terms . 2
3.1 Terms and definitions . 2
3.2 Symbols and abbreviated terms. 2
4 Principle . 3
4.1 General . 3
4.2 Treatment . 4
4.2.1 Treatment for a deposition on a disc . 4
4.2.2 Treatment for a precipitation on a filter. 4
4.3 Principle of alpha spectrometry . 5
5 Reagents and equipment . 5
5.1 Reagents. 5
5.2 Equipment . 6
5.3 Alpha spectrometry measuring equipment . 6
6 Sampling and samples . 6
7 Chemical treatment and deposit process . 7
7.1 General . 7
7.2 Chemical treatment . 7
7.2.1 Autodeposition of polonium on a disc. 7
7.2.2 Microprecipitation on a filter . 8
8 Measurement by alpha spectrometry . 9
8.1 General . 9
8.2 Quality control . 9
8.3 Measurement . 9
9 Expression of results . 9
9.1 General . 9
9.2 Total yield .10
9.3 Activity concentration of Po in the sample .10
9.4 Combined uncertainties .11
9.5 Decision threshold .11
9.6 Detection limit .11
9.7 Limits of the coverage interval .12
9.7.1 Limits of the probabilistically symmetric coverage interval.12
9.7.2 The shortest coverage interval .12
10 Test report .13
Annex A (informative) Cell deposit examples .14
Annex B (informative) Spectrum examples .16
Bibliography .18
ISO 13161:2020(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
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
differe
...