EN ISO 9698:2019

Water quality - Tritium - Test method using liquid scintillation counting (ISO 9698:2019)

This document specifies a method by liquid scintillation counting for the determination of tritium activity concentration in samples of marine waters, surface waters, ground waters, rain waters, drinking waters or of tritiated water ([3H]H2O) in effluents.
The method is not directly applicable to the analysis of organically bound tritium; its determination requires additional chemical processing of the sample (such as chemical oxidation or combustion).
With suitable technical conditions, the detection limit may be as low as 1 Bq·l−1. Tritium activity concentrations below 106 Bq·l−1 can be determined without any sample dilution.

Wasserbeschaffenheit - Tritium - Verfahren mit dem Flüssigszintillationszähler (ISO 9698:2019)

Dieses Dokument legt ein Verfahren zur Bestimmung der Aktivitätskonzentration von Tritium in Proben aus Meer-, Oberflächen-, Grund-, Regen- oder Trinkwasser oder aus tritiiertem Wasser ([3H]H2O) in Abläufen mittels Flüssigszintillationszählung fest.
Dieses Verfahren eignet sich nicht für die direkte Analyse von organisch gebundenem Tritium. Diese Bestimmung erfordert eine weitere chemische Aufarbeitung der Probe (wie eine chemische Oxidation oder Verbrennung).
Unter geeigneten technischen Voraussetzungen kann die Nachweisgrenze bei lediglich 1 Bq l−1 liegen. Aktivitätskonzentrationen von Tritium unter 106 Bq l−1 können ohne Probenverdünnung bestimmt werden.

Qualité de l'eau - Tritium - Méthode d'essai par comptage des scintillations en milieu liquide (ISO 9698:2019)

Le présent document spécifie une méthode de détermination de l'activité volumique du tritium dans des échantillons d'eaux de mer, de surface, souterraines et pluviales, d'eaux potables ou d'eau tritiée ([3H]H2O) dans les effluents par comptage des scintillations en milieu liquide.
Cette méthode n'est pas directement applicable à l'analyse du tritium organiquement lié; sa détermination nécessite un traitement chimique supplémentaire de l'échantillon (tel une oxydation chimique ou une combustion).
Dans les conditions techniques adéquates, la limite de détection peut être réduite à 1 Bq·l−1. Les activités volumiques du tritium inférieures à 106 Bq·l−1 peuvent être déterminées sans dilution de l'échantillon.

Kakovost vode - Tritij - Preskusna metoda s štetjem s tekočinskim scintilatorjem (ISO 9698:2019)

Ta dokument določa metodo s štetjem s tekočinskim scintilatorjem za določanje koncentracije tritija v vzorcih morskih voda, površinskih voda, podzemnih voda, deževnice, pitne vode ali vode s tritijem ([3H]H2O) v odpadnih vodah.
Metoda se neposredno ne uporablja za analizo organsko vezanega tritija, ki za določevanje zahteva dodatno kemično predelavo vzorca (na primer kemično oksidacijo ali zgorevanje). Pod primernimi tehničnimi pogoji je lahko meja detekcije nizka, in sicer do 1 Bq·l−1. Koncentracije aktivnosti tritija pod 106 Bq·l−1 je mogoče določiti brez redčenja vzorca.

General Information

• Status: Published
• Publication Date: 28-May-2019
• Withdrawal Date: 29-Nov-2019
• ICS: 13.060.60 - Examination of physical properties of water
• ICS: 13.080 - Soil quality. Pedology
• ICS: 13.280 - Radiation protection
• 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: 29-May-2019
• Completion Date: 29-May-2019
• Ref Project: SIST EN ISO 9698:2019 - Water quality - Tritium - Test method using liquid scintillation counting (ISO 9698:2019)

Relations

• Replaces: EN ISO 9698:2015 - Water quality - Determination of tritium activity concentration - Liquid scintillation counting method (ISO 9698:2010)
• Effective Date: 05-Jun-2019

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2019
Nadomešča:
SIST EN ISO 9698:2015
SIST ISO 9698:2013
Kakovost vode - Tritij - Preskusna metoda s štetjem s tekočinskim scintilatorjem
(ISO 9698:2019)
Water quality - Tritium - Test method using liquid scintillation counting (ISO 9698:2019)
Wasserbeschaffenheit - Tritium - Verfahren mit dem Flüssigszintillationszähler (ISO
9698:2019)
Qualité de l'eau - Tritium - Méthode d'essai par comptage des scintillations en milieu
liquide (ISO 9698:2019)
Ta slovenski standard je istoveten z: EN ISO 9698:2019
ICS:
13.060.60 Preiskava fizikalnih lastnosti Examination of physical
vode properties of water
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 9698
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2019
EUROPÄISCHE NORM
ICS 13.060.60; 13.280 Supersedes EN ISO 9698:2015
English Version
Water quality - Tritium - Test method using liquid
scintillation counting (ISO 9698:2019)
Qualité de l'eau - Tritium - Méthode d'essai par Wasserbeschaffenheit - Tritium - Verfahren mit dem
comptage des scintillations en milieu liquide (ISO Flüssigszintillationszähler (ISO 9698:2019)
9698:2019)
This European Standard was approved by CEN on 30 April 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
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 9698:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 9698:2019) 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 November 2019, and conflicting national standards
shall be withdrawn at the latest by November 2019.
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 9698:2015.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 9698:2019 has been approved by CEN as EN ISO 9698:2019 without any modification.

INTERNATIONAL ISO
STANDARD 9698
Third edition
2019-05
Water quality — Tritium — Test
method using liquid scintillation
counting
Qualité de l'eau — Tritium — Méthode d'essai par comptage des
scintillations en milieu liquide
Reference number
ISO 9698:2019(E)
©
ISO 2019
ISO 9698:2019(E)
© ISO 2019
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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Published in Switzerland
ii © ISO 2019 – All rights reserved

ISO 9698:2019(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
5.1.1 Water for the blank . 3
5.1.2 Calibration source solution . 4
5.1.3 Scintillation solution. 4
5.1.4 Quenching agent. 4
5.2 Equipment . 4
5.2.1 General. 4
5.2.2 Liquid scintillation counter . 5
5.2.3 Counting vials . 5
6 Sampling and samples . 5
6.1 Sampling and sample transportation . 5
6.2 Sample storage . 6
7 Procedure. 6
7.1 Sample preparation . 6
7.1.1 General. 6
7.1.2 Direct procedure . 6
7.1.3 Distillation . 6
7.2 Preparation of the sources to be measured . 6
7.3 Counting procedure . 7
7.3.1 General. 7
7.3.2 Control and calibration. 7
7.3.3 Measurement conditions . 8
7.3.4 Interference control . 8
8 Expression of results . 9
8.1 General . 9
8.2 Calculation of activity concentration . 9
8.3 Decision threshold .10
8.4 Detection limit .10
8.5 Confidence interval limits.11
8.6 Calculations using the activity per unit of mass .11
9 Test report .11
Annex A (informative) Numerical applications .13
Annex B (informative) Distillation of large volume sample .14
Annex C (informative) Internal standard methods .17
Annex D (informative) Distillation of small volume sample .19
Annex E (informative) Simplified distillation .22
Bibliography .
...