EN ISO 10704:2019
(Main)Water quality - Gross alpha and gross beta activity - Test method using thin source deposit (ISO 10704:2019)
Water quality - Gross alpha and gross beta activity - Test method using thin source deposit (ISO 10704:2019)
This document specifies a method for the determination of gross alpha and gross beta activity concentration for alpha- and beta-emitting radionuclides. 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 gross beta index. Gross alpha and gross beta analysis is not expected to be as accurate nor as precise as specific radionuclide analysis after radiochemical separations.
Maximum beta energies of approximately 0,1 MeV or higher are well measured. It is possible that low energy beta emitters can not detected (e.g. 3H, 55Fe, 241Pu) or can only be partially detected (e.g. 14C, 35S, 63Ni, 210Pb, 228Ra).
The method covers non-volatile radionuclides, 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, rainwater, surface and ground water as well as cooling water, industrial water, domestic and industrial wastewater after proper sampling, sample handling, 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 1 h. Detection limits reached for gross alpha and gross beta are less than 10 Bq/l and 20 Bq/l respectively. The evaporation of 10 ml sample is carried out in 20 min followed by 10 min counting with window-proportional counters.
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 - Dünnschichtverfahren (ISO 10704:2019)
Dieses Dokument legt ein Verfahren zur Bestimmung der Gesamt-Alpha und Gesamt-Beta-Aktivität durch alpha und beta-emittierende Radionuklide fest. Bei der Bestimmung der Gesamt-Alpha und Gesamt-Beta-Aktivität handelt es sich nicht um eine absolute Bestimmung des Alpha bzw. Beta-Strahlungsgehalts der Probe, sondern um eine relative Bestimmung, um sicherzustellen, dass besondere Referenzwerte von spezifischen Alpha und Beta-Strahlern nicht überschritten wurden. Diese Art der Bestimmung wird auch als Bestimmung des Gesamt-Alpha und Gesamt-Beta-Index bezeichnet. Von der Bestimmung der Gesamt-Alpha und Gesamt-Beta-Aktivität ist weder die gleiche Genauigkeit noch die gleiche Präzision zu erwarten wie von der spezifischen Radionuklidanalyse nach radiochemischer Trennung.
Maximale Beta-Energien von etwa 0,1 MeV oder mehr werden gut gemessen. Beta Strahler mit geringer Energie können möglicherweise nicht bestimmt (z. B. 3H, 55Fe, 241Pu) oder nur teilweise bestimmt (z. B. 14C, 35S, 63Ni, 210Pb, 228Ra) werden.
Das Verfahren deckt nicht-flüchtige Radionuklide ab, da einige gasförmige oder flüchtige Radionuklide (z. B. Radon und Radioiod) bei der Aufbereitung der Quelle verloren gehen können.
Das Verfahren ist auf Proben von Trinkwasser, Regenwasser, Oberflächen und Grundwasser sowie Kühlwasser, Prozesswasser, häusliches und gewerbliches Abwasser nach geeigneter Probenahme, Probenbehandlung und Aufbereitung der Untersuchungsprobe (Filtration, falls erforderlich, und Berücksichtigung der im Wasser gelösten Bestandteile) anwendbar.
Das in diesem Dokument beschriebene Verfahren ist im Falle einer Notsituation anwendbar, da die Ergebnisse in weniger als 1 h erhalten werden können. Die Nachweisgrenzen liegen bei unter 10 Bq/l für Gesamt Alpha und bei unter 20 Bq/l für Gesamt Beta. Die Verdampfung von 10 ml Probe erfolgt in 20 min, gefolgt von 10 min Zählung mit Fensterproportionalzählern.
Es liegt in der Verantwortung des Labors, die Eignung dieses Prüfverfahrens für die zu prüfenden Wasserproben sicherzustellen.
Qualité de l'eau - Activités alpha globale et bêta globale - Méthode d'essai par dépôt d'une source fine (ISO 10704:2019)
Le présent document spécifie une méthode pour la détermination des activités volumiques alpha globale et bêta globale pour des radionucléides émetteurs alpha et bêta. Le mesurage des activités alpha globale et bêta globale n'est pas destiné à déterminer de façon absolue l'activité volumique de tous les radionucléides émetteurs alpha et bêta dans un échantillon pour essai, mais à s'assurer, par dépistage, que les niveaux de référence particuliers des émetteurs spécifiques alpha et bêta n'ont pas été dépassés. Ce type de détermination est également connu en tant qu'indice alpha et bêta global. On ne s'attend pas à ce que l'analyse alpha et bêta globale soit aussi précise que l'analyse de radionucléides spécifiques après séparations radiochimiques.
Des énergies bêta maximales sont correctement mesurées à partir d'environ 0,1 MeV ou plus. Les émetteurs bêta de faible énergie peuvent ne pas être détectés (par exemple 3H, 55Fe, 241Pu) ou peuvent être seulement partiellement détectés (par exemple 14C, 35S, 63Ni, 210Pb, 228Ra).
La méthode couvre les radionucléides non volatils, car certains radionucléides gazeux ou volatils (par exemple le radon et l'iode radioactif) peuvent être perdus au cours de la préparation de la source.
La méthode d'essai est applicable 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'eau industrielle, d'eaux usées domestiques et industrielles après échantillonnage approprié, manipulation de l'échantillon et préparation de l'échantillon pour essai (filtration si nécessaire et en tenant compte de la quantité de matières dissoutes dans l'eau).
La méthode décrite dans le présent document est applicable dans le cas d'une situation d'urgence car les résultats peuvent être obtenus en moins d'1 h. Les limites de détection atteintes pour l'activité alpha globale et l'activité bêta globale sont inférieures à 10 Bq/L et 20 Bq/L, respectivement. L'évaporation d'un échantillon de 10 mL s'effectue en 20 min et est suivie d'un comptage de 10 min à l'aide de compteurs proportionnels à fenêtre.
Il incombe au laboratoire de s'assurer de l'aptitude à l'emploi de cette méthode d'essai pour les échantillons d'eau soumis à essai.
Kakovost vode - Skupna alfa in skupna beta aktivnost - Preskusna metoda z odlaganjem v tankem sloju (ISO 10704:2019)
Ta dokument določa metodo za določevanje koncentracije skupne alfa in skupne beta aktivnosti za alfa in beta oddajne radionuklide. 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 skupni beta indeks. Ne pričakuje se, da bo skupna alfa in skupna beta analiza enako točna in natančna kot specifična radionuklidna analiza po radiokemičnih separacijah.
Največje beta energije približno 0,1 MeV ali višje se z lahkoto izmerijo. Beta oddajnikov z zelo nizko energijo morda ni mogoče zaznati (npr. 3H, 55Fe, 241Pu) oziroma jih je mogoče le delno zaznati (npr. 14C, 35S, 63Ni, 210Pb, 228Ra).
Metoda zajema nehlapne radionuklide, 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, ravnanju z vzorci 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 eni uri. Dosežene mejne vrednosti zaznavanja za skupno alfa in skupno beta aktivnost so manj kot 10 Bq/l oziroma 20 Bq/l. Izhlapevanje 10 ml vzorca se izvede v 20 minutah, čemur sledi 10-minutno štetje s proporcionalnimi števci.
Laboratorij mora zagotoviti primernost te preskusne metode za vzorce
vode, ki se preskušajo.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2019
1DGRPHãþD
SIST EN ISO 10704:2015
SIST ISO 10704:2013
Kakovost vode - Skupna alfa in skupna beta aktivnost - Preskusna metoda z
odlaganjem v tankem sloju (ISO 10704:2019)
Water quality - Gross alpha and gross beta activity - Test method using thin source
deposit (ISO 10704:2019)
Wasserbeschaffenheit - Bestimmung der Gesamt-Alpha- und der Gesamt-Beta-Aktivität
in nicht-salzhaltigem Wasser - Dünnschichtverfahren (ISO 10704:2019)
Qualité de l'eau - Activités alpha globale et bêta globale - Méthode d'essai par dépôt
d'une source fine (ISO 10704:2019)
Ta slovenski standard je istoveten z: EN ISO 10704:2019
ICS:
13.060.60 Preiskava fizikalnih lastnosti Examination of physical
vode properties of water
13.280 Varstvo pred sevanjem Radiation protection
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 10704
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2019
EUROPÄISCHE NORM
ICS 13.060.60; 13.280 Supersedes EN ISO 10704:2015
English Version
Water quality - Gross alpha and gross beta activity - Test
method using thin source deposit (ISO 10704:2019)
Qualité de l'eau - Activités alpha globale et bêta globale Wasserbeschaffenheit - Bestimmung der Gesamt-
- Méthode d'essai par dépôt d'une source fine (ISO Alpha- und der Gesamt-Beta-Aktivität in nicht-
10704:2019) salzhaltigem Wasser - Dünnschichtverfahren (ISO
10704:2019)
This European Standard was approved by CEN on 16 February 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 10704:2019 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 10704:2019) 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 September 2019, and conflicting national standards
shall be withdrawn at the latest by September 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 10704:2015.
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 10704:2019 has been approved by CEN as EN ISO 10704:2019 without any modification.
INTERNATIONAL ISO
STANDARD 10704
Second edition
2019-02
Water quality — Gross alpha and gross
beta activity — Test method using thin
source deposit
Qualité de l'eau — Activités alpha globale et bêta globale — Méthode
d'essai par dépôt d'une source fine
Reference number
ISO 10704:2019(E)
©
ISO 2019
ISO 10704:2019(E)
© ISO 2019
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ISO 10704:2019(E)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and symbols . 2
4 Principle . 3
5 Chemical reagents and equipment . 3
5.1 Reagents. 3
5.1.1 General. 3
5.1.2 Standard solutions . 3
5.1.3 Wetting or surfactant agents . 4
5.1.4 Volatile organic solvents . . 4
5.1.5 Water . 4
5.1.6 Specific reagents for alpha-emitting radionuclides co-precipitation . 4
5.2 Equipment . 4
5.2.1 Laboratory equipment for direct evaporation . 4
5.2.2 General equipment . . 4
5.2.3 Special equipment for alpha-emitting radionuclide co-precipitation . 5
5.2.4 Measurement equipment . 5
6 Sampling . 5
7 Procedure. 5
7.1 Preliminary . 5
7.2 Source preparation . 5
7.2.1 Preparation of planchet . 5
7.2.2 Evaporation . 6
7.2.3 Co-precipitation . 6
7.3 Counting stage . 7
7.4 Background and blank determination . 7
7.5 Preparation of counting standard for calibration . 7
7.6 Preparation of calibration source for self-absorption determination . 8
7.6.1 General. 8
7.6.2 Spiking one of two test portions . 8
7.6.3 Self-absorption curve . . 8
8 Expression of results . 9
8.1 General . 9
8.2 Alpha activity concentration . 9
8.3 Beta activity concentration . 9
8.4 Standard uncertainty of the alpha activity concentration .10
8.5 Standard uncertainty of the beta activity concentration .10
8.6 Decision threshold .12
8.6.1 Decision threshold of the alpha activity concentration.12
8.6.2 Decision threshold of the beta activity concentration .12
8.7 Detection limit .12
8.7.1 Detection limit of the alpha activity concentration .12
8.7.2 Detection limit of the beta activity concentration .13
8.8 Confidence limits.13
9 Control of interferences .13
9.1 General
...
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