EN ISO 11704:2018
(Main)Water quality - Gross alpha and gross beta activity - Test method using liquid scintillation counting (ISO 11704:2018)
Water quality - Gross alpha and gross beta activity - Test method using liquid scintillation counting (ISO 11704:2018)
This document specifies a method for the determination of gross alpha and gross beta activity concentration for alpha- and beta-emitting radionuclides using liquid scintillation counting (LSC).
The method is applicable to all types of waters with a dry residue of less than 5 g/l and when no correction for colour quenching is necessary.
Gross alpha and gross beta activity measurement is not intended to give an absolute determination of the activity concentration of all alpha- and beta-emitting radionuclides in a test sample, but is a screening analysis to ensure particular reference levels of specific alpha and beta emitters have not been exceeded. This type of determination is also known as gross alpha and beta index. Gross alpha and beta analysis is not expected to be as accurate nor as precise as specific radionuclide analysis after radiochemical separations.
The method covers non-volatile radionuclides below 80 °C, since some gaseous or volatile radionuclides (e.g. radon and radioiodine) can be lost during the source preparation.
The method is applicable to test samples of drinking water, rain water, surface and ground water as well as cooling water, industrial water, domestic and industrial waste water after proper sampling and test sample preparation (filtration when necessary and taking into account the amount of dissolved material in the water).
The method described in this document is applicable in the event of an emergency situation, because the results can be obtained in less than 4 h by directly measuring water test samples without any treatment.
It is the laboratory's responsibility to ensure the suitability of this test method for the water samples tested.
Wasserbeschaffenheit - Gesamt-Alpha- und Gesamt-Beta-Aktivität - Verfahren mit dem Flüssigszintillationszähler (ISO 11704:2018)
Dieses Dokument legt ein Verfahren zur Bestimmung der Gesamt-Alpha- und Gesamt-Beta-Aktivität durch alpha- und beta-emittierende Radionuklide mittels Flüssigszintillationszählung (en: liquid scintillation counting, LSC) fest.
Das Verfahren ist anwendbar auf alle Wässer mit einem Trockenrückstand von weniger als 5 g/l und wenn keine Korrektur des Farbquenchs erforderlich ist.
Die Messung der Gesamt-Alpha- und Gesamt-Beta-Aktivität ist nicht dafür vorgesehen, eine absolute Bestimmung aller alpha- und beta-strahlenden Radionuklide in einer zu untersuchenden Probe zu leisten, aber als Screeningverfahren ist es geeignet, um sicherzustellen, dass festgelegte Referenzniveaus spezifischer Alpha- und Beta-Strahler nicht überschritten werden. Diese Art der Bestimmung ist auch als Gesamt-Alpha- und Beta-Index bekannt. Von der Gesamt-Alpha- und Beta-Analyse wird nicht erwartet, dass sie genauso akkurat und präzise ist wie die Analyse spezifischer Radionuklide nach radiochemischer Trennung.
Das Verfahren deckt nicht-flüchtige Radionuklide unter 80 °C ab, da einige gasförmige oder flüchtige Radionuklide (z. B. Radon und Radiojod) bei der Aufbereitung der Quelle verloren gehen können.
Das Verfahren ist auf Proben von Trinkwasser, Regenwasser, Oberflächen- und Grundwasser sowie Kühl-wasser, Prozesswasser, häusliches und gewerbliches Abwasser nach geeigneter Probenahme, Proben-behandlung und Aufbereitung der Untersuchungsprobe (Filtration, falls erforderlich, und Berücksichtigung der Menge der im Wasser gelösten Bestandteile) anwendbar.
Das in diesem Dokument beschriebene Verfahren ist in Notfall-Situationen anwendbar, da die Ergebnisse in weniger als 4 h durch direktes Messen der Wasserproben ohne jegliche Vorbehandlung erhalten werden können.
Es liegt in der Verantwortung des Labors, die Eignung dieses Prüfverfahrens für die zu prüfenden Wasser-proben sicherzustellen.
Qualité de l'eau - Activités alpha globale et bêta globale - Méthode d'essai par comptage des scintillations en milieu liquide (ISO 11704:2018)
Le présent document spécifie une méthode de détermination des activités volumiques alpha globale et bêta globale pour des radionucléides émetteurs alpha et bêta par comptage des scintillations en milieu liquide.
La méthode est applicable à tous les types d'eau ayant un résidu sec inférieur à 5 g/l et lorsqu'aucune correction n'est nécessaire pour l'affaiblissement lumineux de couleur.
Le mesurage des activités alpha globale et bêta globale n'est pas destiné à fournir une détermination absolue de l'activité volumique de tous les radionucléides émetteurs alpha et bêta dans un échantillon pour essai; il s'agit plutôt d'une analyse de contrôle visant à s'assurer que des niveaux de référence donnés d'émetteurs alpha et bêta n'ont pas été dépassés. Ce type de déterminations est également connu sous le nom d'indices alpha et bêta. Il ne faut pas s'attendre à ce que l'analyse des activités alpha globale et bêta globale soit aussi précise, ni aussi juste, que l'analyse de radionucléides spécifiques après séparation radiochimique.
Cette méthode couvre les radionucléides non volatils en dessous de 80 °C, étant donné que certains radionucléides gazeux ou volatils (par exemple, le radon et l'iode radioactif) peuvent être perdus lors de la préparation de la solution source.
Cette méthode peut s'appliquer à des échantillons pour essai d'eau potable, d'eau de pluie, d'eau de surface et d'eau souterraine, ainsi que d'eau de refroidissement, d'eaux industrielles, d'eaux usées domestiques et industrielles, après avoir procédé comme il se doit au prélèvement et à la préparation des échantillons pour essai (en les filtrant lorsque cela s'avère nécessaire et en tenant compte de la quantité de matière dissoute dans l'eau).
La méthode décrite dans le présent document est applicable en cas de situation d'urgence, car les résultats peuvent être obtenus en moins de 4 h en mesurant directement les échantillons d'eau pour essai sans aucun traitement.
Il incombe au laboratoire de s'assurer de la pertinence de la présente méthode d'essai pour les échantillons d'eau soumis à essai.
Kakovost vode - Skupna alfa in skupna beta aktivnost - Preskusna metoda s štetjem s tekočinskim scintilatorjem (ISO 11704:2018)
Ta dokument določa metodo za določevanje koncentracije skupne alfa in skupne beta aktivnosti za alfa in beta oddajne radionuklide s štetjem s tekočinskim scintilatorjem (LSC).
Metoda se uporablja za vse vrste vod s suhim ostankom, manjšim od 5 g/l, pri katerih ni potreben
popravek za dušenje fluorescence.
Meritev skupne alfa in skupne beta aktivnosti ni namenjena absolutni določitvi koncentracije aktivnosti vseh alfa in beta oddajnih radionuklidov v preskusnem vzorcu, temveč je presejalna analiza, s katero se zagotovi, da določene referenčne ravni specifičnih alfa in beta oddajnikov
niso bile presežene. Ta vrsta določevanja se imenuje tudi skupni alfa in beta indeks. Ne pričakuje se, da bo skupna alfa
in skupna beta analiza enako točna in natančna kot specifična radionuklidna analiza po radiokemičnih separacijah.
Metoda zajema nehlapne radionuklide s temperaturo, nižjo od 80 °C, saj se lahko nekateri radionuklidi v plinastem stanju oziroma hlapni radionuklidi (npr. radon in radioaktivni jod) med pripravo virov izgubijo.
Metoda se uporablja za preskusne vzorce pitne vode, deževnice, površinske in podtalne vode
ter vode za hlajenje, industrijske vode, gospodinjske in industrijske odpadne vode po ustreznem vzorčenju in pripravi preskusnih vzorcev (filtracija, kadar je to potrebno, in upoštevanje količine raztopljenih snovi v vodi).
Metoda, opisana v tem dokumentu, se uporablja v izrednih razmerah, saj
je mogoče rezultate pridobiti v manj kot štirih urah z neposrednim merjenjem preskusnih vzorcev vode brez obdelave.
Laboratorij mora zagotoviti primernost te preskusne metode za vzorce vode, ki se preskušajo.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2019
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SIST EN ISO 11704:2015
SIST ISO 11704:2013
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Water quality - Gross alpha and gross beta activity - Test method using liquid scintillation
counting (ISO 11704:2018)
Wasserbeschaffenheit - Gesamt-Alpha- und Gesamt-Beta-Aktivität - Verfahren mit dem
Flüssigszintillationszähler (ISO 11704:2018)
Qualité de l'eau - Activités alpha globale et bêta globale - Méthode d'essai par comptage
des scintillations en milieu liquide (ISO 11704:2018)
Ta slovenski standard je istoveten z: EN ISO 11704:2018
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 11704
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2018
EUROPÄISCHE NORM
ICS 13.060.60; 17.240 Supersedes EN ISO 11704:2015
English Version
Water quality - Gross alpha and gross beta activity - Test
method using liquid scintillation counting (ISO
11704:2018)
Qualité de l'eau - Activités alpha globale et bêta globale Wasserbeschaffenheit - Gesamt-Alpha- und Gesamt-
- Méthode d'essai par comptage des scintillations en Beta-Aktivität - Verfahren mit dem
milieu liquide (ISO 11704:2018) Flüssigszintillationszähler (ISO 11704:2018)
This European Standard was approved by CEN on 1 November 2018.
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
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11704:2018 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 11704:2018) 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 June 2019, and conflicting national standards shall be
withdrawn at the latest by June 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 11704:2015.
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 11704:2018 has been approved by CEN as EN ISO 11704:2018 without any modification.
INTERNATIONAL ISO
STANDARD 11704
Second edition
2018-11
Water quality — Gross alpha and gross
beta activity — Test method using
liquid scintillation counting
Qualité de l'eau — Activités alpha globale et bêta globale — Méthode
d'essai par comptage des scintillations en milieu liquide
Reference number
ISO 11704:2018(E)
©
ISO 2018
ISO 11704:2018(E)
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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ii © ISO 2018 – All rights reserved
ISO 11704:2018(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
5 Reagents and equipment . 3
6 Sampling . 5
7 Procedure. 5
7.1 Direct counting. 5
7.2 Thermal preconcentration . 5
7.3 Sample preparation . 6
7.4 Liquid scintillation measurement . 6
7.4.1 Preparation of alpha and beta calibration sources . 6
7.4.2 Optimization of counting conditions . 6
7.4.3 Blank sample preparation and measurement . 7
7.4.4 Alpha and beta efficiencies . 7
7.4.5 Sample measurement . 8
8 Expression of results . 8
8.1 Calculation of activity per mass. 8
8.2 Standard uncertainty . 9
8.3 Decision threshold .10
8.4 Detection limit .10
8.5 Confidence limits.10
8.6 Quality control .11
9 Interference control .11
9.1 Contamination .11
9.2 Ingrowth of radon .11
9.3 Loss of polonium .11
10 Test report .11
Annex A (informative) Set-up parameters and validation data .13
Annex B (informative) Method performances under different conditions .17
Bibliography .18
ISO 11704:2018(E)
Foreword
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For an explanation of the voluntary natu
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