EN ISO 22125-2:2019

Water quality - Technetium-99 - Part 2: Test method using inductively coupled plasma mass spectrometry (ICP-MS) (ISO 22125-2:2019)

This document specifies a method for the measurement of 99Tc in all types of water by inductively coupled plasma mass spectrometry (ICP-MS).
The method is applicable to test samples of supply/drinking water, rainwater, surface and ground water, as well as cooling water, industrial water, domestic, and industrial wastewater after proper sampling and handling and test sample preparation. A filtration of the test sample is necessary.
The detection limit depends on the sample volume and the instrument used. The method described in this document, using currently available ICP-MS, has a detection limit of approximately 0,2 ng·kg−1 to 0,5 ng·kg−1 (0,1 Bq·kg−1 to 0,3 Bq·kg−1), which is much lower than the WHO criteria for safe consumption of drinking water (100 Bq·l−1)[3]. The method presented in this document is not intended for the determination of ultra-trace amount of 99Tc.
The mass concentration values in this document are expressed by sample mass unit instead of sample volume unit as it is usually the case in similar standards. The reason is that 99Tc is measured in various matrix types such as fresh water or sea water, which have significant differences in density. The mass concentration values can be easily converted to sample volume unit by measuring the sample volume. However, it increases the uncertainty on the mass concentration result.
The method described in this document is applicable in the event of an emergency situation, but not if 99mTc is present at quantities that could cause interference.
The analysis of Tc adsorbed to suspended matter is not covered by this method.
It is the user's responsibility to ensure the validity of this test method for the water samples tested.

Wasserbeschaffenheit - Technetium 99 - Teil 2: Verfahrens mittels Massenspektronomie und induktiv gekoppeltem Plasma (ICP-MS) (ISO 22125-2:2019)

Dieses Dokument legt ein Verfahren zur Messung von 99Tc in allen Wasserarten durch Massenspektrometrie mit induktiv gekoppeltem Plasma (ICP MS, en: inductively coupled plasma mass spectrometry) fest.
Das Verfahren ist auf Untersuchungsproben von Versorgungs /Trinkwasser, Regenwasser, Oberflächen  und Grundwasser sowie Kühlwasser, Prozesswasser, häusliches und gewerbliches Abwasser nach geeigneter Probenahme, Probenbehandlung und Vorbereitung der Untersuchungsprobe anwendbar. Es ist eine Filtration der Untersuchungsprobe notwendig.
Die Nachweisgrenze hängt vom Probenvolumen und dem verwendeten Gerät ab. Das in diesem Dokument beschriebene Verfahren hat, bei Verwendung derzeit verfügbarer ICP MS Geräte, eine Nachweisgrenze von etwa 0,2 ng · kg−1 bis 0,5 ng · kg−1 (entsprechend 0,1 Bq · kg−1 bis 0,3 Bq · kg−1); dies liegt unter den WHO Kriterien für den sicheren Verzehr von Trinkwasser (100 Bq · l−1) [3]. Das in diesem Dokument beschriebene Verfahren ist nicht für die Bestimmung von 99Tc im Ultraspurenbereich vorgesehen.
In diesem Dokument werden die Massenkonzentrationswerte bezogen auf die Masseneinheit statt auf die Volumeneinheit der Probe ausgedrückt, wie dies üblicherweise bei vergleichbaren Standards der Fall ist. Der Grund dafür ist, dass 99Tc in verschiedenen Matrixtypen wie Süßwasser oder Meerwasser gemessen wird, die hinsichtlich der Dichte signifikant unterschiedlich sind. Durch Messen des Probenvolumens können die Massenkonzentrationswerte auf einfache Weise auf die Volumeneinheit der Probe bezogen umgerechnet werden. Dies führt allerdings zur Erhöhung der Messunsicherheit des Massenkonzentrationsergebnisses.
Das in diesem Dokument beschriebene Verfahren ist bei Notfallsituationen anwendbar; dies gilt jedoch nicht, wenn 99mTc in Mengen vorhanden ist, die eine Interferenz verursachen könnten.
Die Analyse von Tc, das an Schwebstoffen adsorbiert ist, wird nicht durch dieses Verfahren abgedeckt.
Es liegt in der Verantwortung des Anwenders, die Validität dieses Prüfverfahrens für die zu prüfenden Wasserproben sicherzustellen.

Qualité de l'eau - Technétium-99 - Partie 2: Méthode d’essai par spectrométrie de masse couplée à un plasma induit (ISO 22125-2:2019)

Le présent document spécifie une méthode de mesure de 99Tc dans tous les types d'eau par spectrométrie de masse couplée à un plasma induit (ICP-MS).
Cette méthode est applicable aux échantillons pour essai d'eau de distribution/potable, d'eau pluviale, d'eau de surface et souterraine, ainsi que d'eau de refroidissement, d'eau industrielle, d'eau usée domestique et industrielle après échantillonnage, manipulation de l'échantillon et préparation de l'échantillon pour essai. Il est nécessaire de filtrer l'échantillon pour essai.
La limite de détection dépend du volume d'échantillon et de l'instrument utilisé. La méthode décrite dans le présent document, qui a recours aux spectromètres ICP-MS actuellement disponibles, a une limite de détection d'environ 0,2 ng·kg−1 à 0,5 ng·kg−1 (0,1 Bq·kg−1 à 0,3 Bq·kg−1), ce qui est nettement inférieur aux critères de potabilité de l'eau de l'OMS (100 Bq·l−1).[3] La méthode présentée dans le présent document n'est pas applicable à la détermination de la quantité de 99Tc à l'état d'ultra-traces.
Les valeurs de concentration en masse indiquées dans le présent document sont exprimées en unité de masse d'échantillon, et non en unité de volume d'échantillon comme c'est habituellement le cas dans les normes similaires. Cela tient au fait que 99Tc est mesuré dans différents types de matrices tels que l'eau douce ou l'eau de mer, qui présentent des masses volumiques très différentes. Les valeurs de concentration en masse peuvent être facilement converties en unité de volume d'échantillon en mesurant le volume d'échantillon. Cependant, cela accroît l'incertitude applicable au résultat de la concentration en masse.
La méthode décrite dans le présent document est applicable en cas d'urgence, mais pas si 99mTc est présent à des quantités susceptibles de provoquer des interférences.
L'analyse de Tc adsorbé dans la matière en suspension n'est pas couverte par la présente méthode.
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 - Tehnecij Tc-99 - 2. del: Preskusna metoda z masno spektrometrijo z induktivno sklopljeno plazmo (ICP-MS) (ISO 22125-2:2019)

Ta standard določa metodo za merjenje tehnecija 99Tc v vseh vrstah vode z masno spektrometrijo z induktivno sklopljeno plazmo (ICP-MS).
Metoda, opisana v tem standardu, s trenutno razpoložljivo masno spektrometrijo ima mejo zaznavnosti približno 0,2–0,5 ng•l-1 (0,1–0,3 Bq•kg-1), ki je precej nižja od meril organizacije WHO za varno porabo pitne vode (100 Bq•l-1). Metoda, predstavljena v tem standardu, ni namenjena določanju količine ultra-sledov tehnecija 99Tc.

General Information

• Status: Published
• Publication Date: 26-Nov-2019
• Withdrawal Date: 30-May-2020
• 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: 27-Nov-2019
• Completion Date: 27-Nov-2019
• Ref Project: SIST EN ISO 22125-2:2020 - Water quality - Technetium-99 - Part 2: Test method using inductively coupled plasma mass spectrometry (ICP-MS) (ISO 22125-2:2019)

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2020
Kakovost vode - Tehnecij Tc-99 - 2. del: Preskusna metoda z masno
spektrometrijo z induktivno sklopljeno plazmo (ICP-MS) (ISO 22125-2:2019)
Water quality - Technetium-99 - Part 2: Test method using inductively coupled plasma
mass spectrometry (ICP-MS) (ISO 22125-2:2019)
Wasserbeschaffenheit - Technetium 99 - Teil 2: Verfahrens mittels Massenspektronomie
und induktiv gekoppeltem Plasma (ICP-MS) (ISO 22125-2:2019)
Qualité de l'eau - Technétium-99 - Partie 2: Méthode d’essai par spectrométrie de masse
couplée à un plasma induit (ISO 22125-2:2019)
Ta slovenski standard je istoveten z: EN ISO 22125-2:2019
ICS:
13.060.50 Preiskava vode na kemične Examination of water for
snovi chemical substances
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 22125-2
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2019
EUROPÄISCHE NORM
ICS 13.060.60; 17.240
English Version
Water quality - Technetium-99 - Part 2: Test method using
inductively coupled plasma mass spectrometry (ICP-MS)
(ISO 22125-2:2019)
Qualité de l'eau - Technétium-99 - Partie 2: Méthode Wasserbeschaffenheit - Technetium 99 - Teil 2:
d'essai par spectrométrie de masse couplée à un Verfahrens mittels Massenspektronomie und induktiv
plasma induit (ISO 22125-2:2019) gekoppeltem Plasma (ICP-MS) (ISO 22125-2:2019)
This European Standard was approved by CEN on 8 September 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, 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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 22125-2:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 22125-2:2019) 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 May 2020, and conflicting national standards shall be
withdrawn at the latest by May 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 22125-2:2019 has been approved by CEN as EN ISO 22125-2:2019 without any
modification.
INTERNATIONAL ISO
STANDARD 22125-2
First edition
2019-11
Water quality — Technetium-99 —
Part 2:
Test method using inductively coupled
plasma mass spectrometry (ICP-MS)
Qualité de l'eau — Technétium-99 —
Partie 2: Méthode d’essai par spectrométrie de masse couplée à un
plasma induit (ICP-MS)
Reference number
ISO 22125-2:2019(E)
©
ISO 2019
ISO 22125-2:2019(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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Phone: [phone]
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Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved

ISO 22125-2:2019(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and symbols . 2
4 Principle . 4
5 Sampling, handling and storage . 4
6 Procedure. 4
6.1 Sample preparation for measurement . 4
6.2 Sample measurement . 5
7 Quality assurance and quality control program . 5
7.1 General . 5
7.2 Variables that could influence the measurement . . 5
7.3 Instrument verification. 5
7.4 Contamination . 5
7.5 Interference control . 6
7.6 Method verification . 6
7.7 Demonstration of analyst capability . 6
8 Expression of results . 6
97 98
8.1 Using Re, Tc, or Tc as a recovery tracer . 6
8.1.1 Calculation of mass of tracer and analyte added. 6
8.1.2 Measurement bias . 7
8.1.3 Sample mass concentration . 7
8.1.4 Detection limit . 8
8.1.5 Limit of quantification . 8
95m 97m 99m
8.2 Using Tc, Tc or Tc as a recovery tracer . 8
8.2.1 Calculation of activity of tracer, mass of analyte and mass of internal
standard added . 8
8.2.2 Purification step recovery . 9
8.2.3 Measurement bias . 9
8.2.4 Sample mass concentration . 9
8.2.5 Detection limit . 9
8.2.6 Limit of quantification .10
8.2.7 Conversion of mass concentration to activity concentration .10
8.2.8 Conversion of mass concentration to volume unit .10
8.3 Correction for the presence of Tc in the tracer . .11
9 Test report .11
Annex A (informative) Method 1 — TEVA resin .12
Annex B (informative) Method 2 — TRU resin .15
Annex C (informative) Method 3 — Anion exchange resin .18
Bibliography .21
ISO 22125-2:2019(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
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directiv
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