EN ISO 18589-5:2021
(Main)Measurement of radioactivity in the environment - Soil - Part 5: Strontium 90 - Test method using proportional counting or liquid scintillation counting (ISO 18589-5:2019)
Measurement of radioactivity in the environment - Soil - Part 5: Strontium 90 - Test method using proportional counting or liquid scintillation counting (ISO 18589-5:2019)
This document describes the principles for the measurement of the activity of 90Sr in equilibrium with 90Y and 89Sr, pure beta emitting radionuclides, in soil samples. Different chemical separation methods are presented to produce strontium and yttrium sources, the activity of which is determined using proportional counters (PC) or liquid scintillation counters (LSC). 90Sr can be obtained from the test samples when the equilibrium between 90Sr and 90Y is reached or through direct 90Y measurement. The selection of the measuring method depends on the origin of the contamination, the characteristics of the soil to be analysed, the required accuracy of measurement and the resources of the available laboratories.
These methods are used for soil monitoring following discharges, whether past or present, accidental or routine, liquid or gaseous. It also covers the monitoring of contamination caused by global nuclear fallout.
In case of recent fallout immediately following a nuclear accident, the contribution of 89Sr to the total amount of strontium activity will not be negligible. This standard provides the measurement method to determine the activity of 90Sr in presence of 89Sr.
The test methods described in this document can also be used to measure the radionuclides in sludge, sediment, construction material and products by following proper sampling procedure.
Using samples sizes of 20 g and counting times of 1 000 min, detection limits of (0,1 to 0,5) Bq·kg-1 can be achievable for 90Sr using conventional and commercially available proportional counter or liquid scintillation counter when the presence of 89Sr can be neglected. If 89Sr is present in the test sample, detection limits of (1 to 2) Bq·kg-1 can be obtained for both 90Sr and 89Sr using the same sample size, counting time and proportional counter or liquid scintillation counter as in the previous situation.
Ermittlung der Radioaktivität in der Umwelt - Erdboden - Teil 5: Strontium-90 - Messverfahren mit Proportional- oder Flüssigszintillationszählung (ISO 18589-5:2019)
Dieses Dokument legt Verfahren für die Messung der Aktivität von 90Sr im Gleichgewicht mit 90Y und von 89Sr, reine BetastrahlerN1, in Bodenproben fest. Erläutert werden verschiedene chemische Trennverfahren für die Herstellung von Strontium- und Yttriumquellen, deren Aktivität mit Hilfe eines Proportionalzählers (PC, en: proportional counter) oder eines Flüssigszintillationszählers (LSC, en: liquid scintillation counter) bestimmt wird. 90Sr kann von Prüfproben erhalten werden, wenn das radioaktive Gleichgewicht zwischen 90Sr und 90Y erreicht ist, oder direkt durch eine 90Y-Messung. Die Auswahl des Messverfahrens hängt von der Kontamina¬tionsquelle, den Eigenschaften des zu analysierenden Bodens, der geforderten Messgenauigkeit und der Ausstattung der verfügbaren Labore ab.
Diese Verfahren dienen der Bodenüberwachung nach früheren oder aktuellen, unbeabsichtigten oder routi¬nemäßigen flüssigen oder gasförmigen Freisetzungen. Sie decken auch die Überwachung der durch globalen Fallout entstehenden Kontamination ab.
Im Falle eines neueren Fallouts unmittelbar nach einem nuklearen Störfall ist die Freisetzung von 89Sr im Verhältnis zur Gesamtmenge der Strontium-Aktivität nicht vernachlässigbar. Diese Norm beschreibt auch ein Messverfahren zur Bestimmung der Aktivität von 90Sr bei Vorhandensein von 89Sr.
Die in diesem Dokument beschriebenen Prüfverfahren können ebenfalls zur Messung von Radionukliden in Klärschlamm, Sediment, Baumaterialien und -produkten, die auf geeignete Probennahmeverfahren folgen, angewendet werden.
Werden eine Probengröße von 20 g und Messzeiten von 1 000 min verwendet, können Nachweisgrenzen für 90Sr von 0,1 Bq·kg–1 bis 0,5 Bq·kg–1 mit konventionellen und kommerziell erhältlichen Proportional- und Flüssigszintillationszählern erreicht werden, wenn die Gegenwart von 89Sr vernachlässigt werden kann. Ist 89Sr in der Prüfprobe vorhanden, können Nachweisgrenzen von 1 Bq·kg–1 bis 2 Bq·kg–1 für beide Radionuk¬lide, 90Sr und 89Sr, erreicht werden, wenn dieselbe Probengröße, Messzeit und Proportionalzähler oder Flüs¬sigszintillationszähler wie im vorherigen Fall verwendet wird.
Mesurage de la radioactivité dans l'environnement - Sol - Partie 5: Strontium 90 - Méthode d'essai par comptage proportionnel ou comptage par scintillation en milieu liquide (ISO 18589-5:2019)
Merjenje radioaktivnosti v okolju - Tla - 5. del: Stroncij 90 - Preskusna metoda z uporabo proporcionalnega štetja ali tekočega scintilacijskega štetja (ISO 18589-5:2019)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2021
Merjenje radioaktivnosti v okolju - Tla - 5. del: Stroncij 90 - Preskusna metoda z
uporabo proporcionalnega štetja ali tekočega scintilacijskega štetja (ISO 18589-
5:2019)
Measurement of radioactivity in the environment - Soil - Part 5: Strontium 90 - Test
method using proportional counting or liquid scintillation counting (ISO 18589-5:2019)
Ermittlung der Radioaktivität in der Umwelt - Erdboden - Teil 5: Strontium-90 -
Messverfahren mit Proportional- oder Flüssigszintillationszählung (ISO 18589-5:2019)
Mesurage de la radioactivité dans l'environnement - Sol - Partie 5: Strontium 90 -
Méthode d'essai par comptage proportionnel ou comptage par scintillation en milieu
liquide (ISO 18589-5:2019)
Ta slovenski standard je istoveten z: EN ISO 18589-5:2021
ICS:
13.080.99 Drugi standardi v zvezi s Other standards related to
kakovostjo tal soil quality
17.240 Merjenje sevanja Radiation measurements
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 18589-5
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2021
EUROPÄISCHE NORM
ICS 13.080.01; 17.240
English Version
Measurement of radioactivity in the environment - Soil -
Part 5: Strontium 90 - Test method using proportional
counting or liquid scintillation counting (ISO 18589-
5:2019)
Mesurage de la radioactivité dans l'environnement - Ermittlung der Radioaktivität in der Umwelt -
Sol - Partie 5: Strontium 90 - Méthode d'essai par Erdboden - Teil 5: Strontium-90 - Messverfahren mit
comptage proportionnel ou comptage par scintillation Proportional- oder Flüssigszintillationszählung (ISO
en milieu liquide (ISO 18589-5:2019) 18589-5:2019)
This European Standard was approved by CEN on 25 July 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,
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United Kingdom.
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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 18589-5:2021 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
The text of ISO 18589-5:2019 has been prepared by Technical Committee ISO/TC 85 "Nuclear energy,
nuclear technologies, and radiological protection” of the International Organization for Standardization
(ISO) and has been taken over as EN ISO 18589-5:2021 by Technical Committee CEN/TC 430 “Nuclear
energy, nuclear technologies, and radiological protection” the secretariat of which is held by AFNOR.
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 February 2022, and conflicting national standards
shall be withdrawn at the latest by February 2022.
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.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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 18589-5:2019 has been approved by CEN as EN ISO 18589-5:2021 without any
modification.
INTERNATIONAL ISO
STANDARD 18589-5
Second edition
2019-12
Measurement of radioactivity in the
environment — Soil —
Part 5:
Strontium 90 — Test method using
proportional counting or liquid
scintillation counting
Mesurage de la radioactivité dans l'environnement — Sol —
Partie 5: Strontium 90 — Méthode d'essai par comptage
proportionnel et scintillation liquide
Reference number
ISO 18589-5:2019(E)
©
ISO 2019
ISO 18589-5:2019(E)
© ISO 2019
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ii © ISO 2019 – All rights reserved
ISO 18589-5:2019(E)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
3.1 Terms and definitions . 2
3.2 Symbols . 2
4 Principle . 3
4.1 General . 3
4.2 Chemical separation . 3
4.3 Detection . 4
4.3.1 General. 4
4.3.2 Source preparation for liquid scintillation counter . 4
4.3.3 Source preparation for proportional counter . 4
4.3.4 Background determination . 4
5 Chemical reagents and equipment . 5
6 Procedure of strontium desorption . 5
6.1 Principles . 5
6.2 Technical resources . 6
6.2.1 Equipment . 6
6.2.2 Chemical reagents . 6
6.3 Procedure . 6
7 Chemical separation procedure by precipitation . 7
7.1 Principles . 7
7.2 Technical resources . 7
7.2.1 Equipment . 7
7.2.2 Chemical reagents . 8
7.3 Procedure . 8
7.3.1 Separation of alkaline metals and calcium . 8
7.3.2 Separation of barium, radium and lead . 9
7.3.3 Separation of fission products and yttrium . 9
7.3.4 Strontium purification . 9
7.3.5 Yttrium extraction .10
7.3.6 Determination of the chemical yields .11
8 Chemical separation procedure by liquid-liquid extraction .11
8.1 Principle .11
8.2 Technical resources .12
8.2.1 Equipment .12
8.2.2 Chemical reagents .12
8.3 Procedure .13
8.3.1 General.13
8.3.2 Chemical separation of yttrium .
...
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