EN ISO 13162:2021
(Main)Water quality - Carbon 14 - Test method using liquid scintillation counting (ISO 13162:2021)
Water quality - Carbon 14 - Test method using liquid scintillation counting (ISO 13162:2021)
This document specifies a method for the measurement of 14C activity concentration in all types of water samples by liquid scintillation counting (LSC) either directly on the test sample or following a chemical separation.
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.
The detection limit depends on the sample volume, the instrument used, the sample counting time, the background count rate, the detection efficiency and the chemical recovery. The method described in this document, using currently available liquid scintillation counters and suitable technical conditions, has a detection limit as low as 1 Bq∙l−1, which is lower than the WHO criteria for safe consumption of drinking water (100 Bq·l-1). 14C activity concentrations can be measured up to 106 Bq∙l-1 without any sample dilution.
It is the user’s responsibility to ensure the validity of this test method for the water samples tested.
Wasserbeschaffenheit - Kohlenstoff-14 - Verfahren mit dem Flüssigszintillationszähler (ISO 13162:2021)
Dieses Dokument legt ein Verfahren zur Messung der 14C-Aktivitätskonzentration in allen Arten von Wasserproben mittels Flüssigszintillationszähler (LSC, en: liquid scintillation counting) fest, entweder direkt an der Messprobe oder nach einer chemischen Trennung.
Dieses Verfahren ist auf Messproben von Versorgungs-/Trinkwasser, Regenwasser, Oberflächen- und Grundwasser, Meerwasser sowie Kühlwasser, Prozesswasser, häusliches und gewerbliches Abwasser anzuwenden.
Die Nachweisgrenze hängt vom Probenvolumen, dem eingesetzten Messgerät, der Messdauer der Probe, der Zählrate des Nulleffekts, der Zählausbeute und der chemischen Wiederfindung ab. Das in diesem Dokument beschriebene Verfahren hat, bei Verwendung der derzeit verfügbaren Flüssigszintillationszähler und unter geeigneten technischen Bedingungen, eine Nachweisgrenze von nur 1 Bq∙l−1, was unter den WHO-Kriterien für den sicheren Verzehr von Trinkwasser (100 Bq∙l−1) liegt. 14C-Aktivitätskonzentrationen können ohne Probenverdünnung bis 106 Bq∙l−1 gemessen werden.
Es liegt in der Verantwortung des Anwenders, die Validität dieses Prüfverfahrens für die geprüften Wasserproben sicherzustellen.
Qualité de l’eau - Carbone 14 - Méthode d’essai par comptage des scintillations en milieu liquide (ISO 13162:2021)
Le présent document spécifie une méthode de mesurage de l’activité volumique de 14C dans tous types d’échantillons d’eau par comptage des scintillations en milieu liquide (CSL), soit directement sur la prise d’essai, soit après séparation chimique.
Cette méthode s’applique aux prises d’essai d’eau de distribution/potable, d’eau de pluie, d’eau de surface et souterraine, d’eau de mer, ainsi que d’eau de refroidissement, d’eau industrielle, d’eaux usées domestiques et industrielles.
La limite de détection dépend du volume d’échantillon, de l’instrument utilisé, de la durée de comptage des échantillons, du taux de comptage du bruit de fond, du rendement de détection et de la récupération chimique. La méthode décrite dans le présent document, appliquée avec des compteurs à scintillations en milieu liquide actuellement sur le marché et dans des conditions techniques appropriées, présente une limite de détection de l’ordre de 1 Bq∙l−1, ce qui est inférieur aux critères de l’OMS pour une consommation sans risque d’eau potable (100 Bq∙l-1). L’activité volumique de 14C peut être mesurée jusqu’à 106 Bq∙l-1 sans aucune dilution d’échantillon.
Il incombe à l’utilisateur de s’assurer que la méthode d’essai relative aux échantillons d’eau soumis à essai est valide.
Kakovost vode - Ogljik C-14 - Preskusna metoda s štetjem s tekočinskim scintilatorjem (ISO 13162:2021)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2021
Nadomešča:
SIST EN ISO 13162:2015
SIST ISO 13162:2013
Kakovost vode - Ogljik C-14 - Preskusna metoda s štetjem s tekočinskim
scintilatorjem (ISO 13162:2021)
Water quality - Carbon 14 - Test method using liquid scintillation counting (ISO
13162:2021)
Wasserbeschaffenheit - Kohlenstoff-14 - Verfahren mit dem Flüssigszintillationszähler
(ISO 13162:2021)
Qualité de l’eau - Carbone 14 - Méthode d’essai par comptage des scintillations en
milieu liquide (ISO 13162:2021)
Ta slovenski standard je istoveten z: EN ISO 13162:2021
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 13162
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2021
EUROPÄISCHE NORM
ICS 13.060.60; 17.240 Supersedes EN ISO 13162:2015
English Version
Water quality - Carbon 14 - Test method using liquid
scintillation counting (ISO 13162:2021)
Qualité de l'eau - Carbone 14 - Méthode d'essai par Wasserbeschaffenheit - Kohlenstoff-14 - Verfahren mit
comptage des scintillations en milieu liquide (ISO dem Flüssigszintillationszähler (ISO 13162:2021)
13162:2021)
This European Standard was approved by CEN on 13 May 2021.
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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 13162:2021 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 13162:2021) 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 December 2021, and conflicting national standards
shall be withdrawn at the latest by December 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 13162:2015.
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 13162:2021 has been approved by CEN as EN ISO 13162:2021 without any modification.
INTERNATIONAL ISO
STANDARD 13162
Second edition
2021-06
Water quality — Carbon 14 — Test
method using liquid scintillation
counting
Qualité de l’eau — Carbone 14 — Méthode d’essai par comptage des
scintillations en milieu liquide
Reference number
ISO 13162:2021(E)
©
ISO 2021
ISO 13162:2021(E)
© ISO 2021
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
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ISO 13162:2021(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, symbols and abbreviations . 2
4 Principle . 3
5 Sampling and storage . 4
5.1 Sampling . 4
5.2 Sample storage . 4
6 Reagents and equipment . 4
6.1 Reagents. 4
6.1.1 Reference water for the blank . 4
6.1.2 Calibration source solution . 4
6.1.3 Scintillation solution. 5
6.1.4 Quenching agent. 5
6.2 Equipment . 5
7 Procedure. 5
7.1 Sample preparation . 5
7.2 Preparation of the counting vial . 5
7.3 Counting procedure . 6
7.4 Calibration and verification . 6
7.5 Measurement conditions . . 7
8 Expression of results . 7
8.1 General . 7
8.2 Calculation of activity concentration without sample preparation . 7
8.3 Calculation of activity concentration with sample preparation . 8
8.4 Decision threshold . 8
8.5 Detection limit . 9
8.6 Limits of the coverage intervals . 9
8.6.1 Limits of the probabilistically symmetric coverage interval. 9
8.6.2 Limits of the shortest coverage interval . 9
8.7 Calculations using the activity per mass .10
9 Test report .10
Annex A (informative) Extraction of total carbon by precipitation of calcium carbonate .12
Annex B (informative) Extraction of total carbon: absorption counting .15
Annex C (informative) Internal standard method .18
Annex D (informative) Numerical applications .20
Bibliography .22
ISO 13162:2021(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
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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
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
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is informat
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