1、March 2016 English price group 19No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 13.060.60; 17.240!%MK“2429940www.d
2、in.deDIN EN ISO 13160Water quality Strontium 90 and strontium 89 Test methods using liquid scintillation counting or proportional counting (ISO 13160:2012);English version EN ISO 13160:2015,English translation of DIN EN ISO 13160:2016-03Wasserbeschaffenheit Strontium 90 und Strontium 89 Verfahren mi
3、ttels Flssigszintillationszhlung oder Proportionalzhlung (ISO 13160:2012);Englische Fassung EN ISO 13160:2015,Englische bersetzung von DIN EN ISO 13160:2016-03Qualit de leau Strontium 90 et strontium 89 Mthodes dessai par comptage des scintillations en milieu liquide ou par comptage proportionnel (I
4、SO 13160:2012);Version anglaise EN ISO 13160:2015,Traduction anglaise de DIN EN ISO 13160:2016-03www.beuth.deDocument comprises 46 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.03.16 DIN EN ISO 13160:2016-03 2 A comma is used
5、 as the decimal marker. National foreword The text of ISO 13160:2012 has been prepared by Technical Committee ISO/TC 147 “Water quality” and has been taken over as EN ISO 13160:2015 by Technical Committee CEN/TC 230 “Water analysis” (Secretariat: DIN, Germany). The responsible German body involved i
6、n its preparation was DIN-Normenausschuss Wasserwesen (DIN Standards Committee Water Practice), Working Committee NA 119-01-03 AA Wasseruntersuchung. Designation of the method: Strontium 90 and strontium 89 - Test method using liquid scintillation counting or proportional counting (C 28) Method DIN
7、EN ISO 13160 C 28 The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 3696 DIN ISO 3696 ISO 5667-1 DIN EN ISO 5667-1 ISO 5667-3 DIN EN ISO 5667-3 ISO 5667-14 DIN ISO 5667-14 ISO 11929 DIN ISO 11929 ISO 18589-5 DIN ISO 18589-5 ISO 80000-10 D
8、IN EN ISO 80000-10 ISO/IEC 17025 DIN EN ISO/IEC 17025 Expert assistance and specialized laboratories will be required to perform the analyses described in this standard. Existing safety requirements are to be observed. Depending on the objective of the analysis, a check shall be made on a case-by-ca
9、se basis as to whether and to what extent additional conditions will have to be specified. This standard has been prepared by DIN-Normenausschuss Wasserwesen (DIN Standards Committee Water Practice) in collaboration with the Wasserchemische Gesellschaft - Fachgruppe in der Gesellschaft Deutscher Che
10、miker (Water Chemistry Society - Division of the German Chemical Society). It is part of the series Deutsche Einheitsverfahren zur Wasser-, Abwasser- und Schlammuntersuchung (German standard methods for the examination of water, waste water and sludge): Strontium 90 and strontium 89 - Test method us
11、ing liquid scintillation counting or proportional counting (C 28) Standard methods published as DIN Standards are obtainable from Beuth Verlag GmbH, either individually or grouped in volumes. The standard methods included in the loose-leaf publication entitled Deutsche Einheitsverfahren zur Wasser-,
12、 Abwasser- und Schlammuntersuchung will continue to be published by Beuth Verlag GmbH and Wiley-VCH Verlag GmbH 17.240 English Version Water quality - Strontium 90 and strontium 89 - Test methods using liquid scintillation counting or proportional counting (ISO 13160:2012) Qualit de leau - Strontium
13、 90 et strontium 89 - Mthodes dessai par comptage des scintillations en milieu liquide ou par comptage proportionnel (ISO 13160:2012) Wasserbeschaffenheit - Strontium 90 und Strontium 89 - Verfahren mittels Flssigszintillationszhlung oder Proportionalzhlung (ISO 13160:2012) This European Standard wa
14、s approved by CEN on 27 September 2015. 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
15、 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
16、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, Gr
17、eece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUN
18、G CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 13160:2015 EContents PageEuropean foreword . 31 Scope 52 Normative references . 53 Symbols, definitions, an
19、d units . 54 Principle . 64.1 General . 64.2 Chemical separation . 64.3 Detection 75 Chemical reagents and equipment . 76 Procedure 76.1 Test sample preparation 76.2 Chemical separation . 76.3 Preparation of the source for test . 96.4 Measurement 107 Expression of results . 127.1 Determination of Sr
20、 in equilibrium with Y90 90. 127.2 Determination of Sr by ingrowth of Y90 90. 137.3 Determination of Sr in presence of Sr when Sr is in equilibrium with Y90 89 90 90157.4 Confidence limits .188 Quality control 189 Test report .19Annex A (informative) Determination of Sr and Sr by precipitation and p
21、roportional counting89 9020Annex B (informative) Determination of Sr and Sr by precipitation and liquid scintillationcounting89 9024Annex C (informative) Determination of 90Sr from its daughter product 90Y at equilibrium by organic extraction and liquid scintillation counting28Annex D (informative)
22、Determination of Sr after ionic exchange separation by proportional9030Annex E (informative) Determination of 90Sr after separation on a crown ether specific resin and liquid scintillation counting 33Annex F (informative) Determination of 90Sr from its daughter product 90Y at equilibrium by organic
23、extraction by proportional counting 35Annex G (informative) Correction factor for purity control using proportional counting 39Bibliography .42DIN EN ISO 13160:2016-03 EN ISO 13160:2015(E)2Foreword . 4.counting.DIN EN ISO 13160:2016-03 EN ISO 13160:2015(E)3European foreword The text of ISO 13160:201
24、2 has been prepared by Technical Committee ISO/TC 147 “Water quality” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 13160:2015 by Technical Committee CEN/TC 230 “Water analysis” the secretariat of which is held by DIN. This European Standard shall be g
25、iven the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2016, and conflicting national standards shall be withdrawn at the latest by April 2016. Attention is drawn to the possibility that some of the elements of this document may b
26、e the subject of patent rights. CEN and/or CENELEC 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, B
27、elgium, 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, Slovakia, Slovenia, Spain, Sweden, Swi
28、tzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 13160:2012 has been approved by CEN as EN ISO 13160:2015 without any modification. ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies).
29、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-g
30、overnmental, 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.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
31、The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vo
32、te.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 13160 was prepared by Technical Committee ISO/TC 147, Water quality, Subcommittee SC 3, Radiolo
33、gical methods.DIN EN ISO 13160:2016-03 EN ISO 13160:2015(E)4 WARNING Persons using this International Standard should be familiar with normal laboratory practice. This document does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the us
34、er to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions.IMPORTANT It is absolutely essential that tests conducted in accordance with this International Standard be carried out by suitably qualified staff.1 ScopeThis International Stand
35、ard specifies the test methods and their associated principles for the measurement of the activity of 90Sr in equilibrium with 90Y, and 89Sr, pure beta-emitting radionuclides, in water samples. Different chemical separation methods are presented to produce strontium and yttrium sources, the activity
36、 of which is determined using a proportional counter (PC) or liquid scintillation counter (LSC). The selection of the test method depends on the origin of the contamination, the characteristics of the water to be analysed, the required accuracy of test results and the available resources of the labo
37、ratories.These test methods are used for water monitoring following, past or present, accidental or routine, liquid or gaseous discharges. It also covers the monitoring of contamination caused by global fallout.When fallout occurs immediately following a nuclear accident, the contribution of 89Sr to
38、 the total amount of strontium activity is not negligible. This International Standard provides the test methods to determine the activity concentration of 90Sr in presence of 89Sr.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For da
39、ted references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 11929, Determination of the characteristic limits (decision threshold, detection limit and limits of the confidence interval) for measurements
40、of ionizing radiation Fundamentals and applicationISO 80000-10, Quantities and units Part 10: Atomic and nuclear physics3 Symbols, definitions, and unitsFor the purposes of this document, the definitions, symbols, and abbreviated terms defined in ISO 11929 and ISO 80000-10 and the following apply.Ai
41、calibration source activity of radionuclide i, at the time of calibration BqcA,iactivity concentration of radionuclide i Bq l-1cA,i*decision threshold of radionuclide i Bq l-1cA,i#detection limit of radionuclide i Bq l-1cA,i,cA,ilower and upper limits of the confidence interval of radionuclide i Bq
42、l-1DIN EN ISO 13160:2016-03 EN ISO 13160:2015(E)5 Rc,ichemical yield of the extraction of radionuclide i 1r0background count rate s-1r0jbackground count rate for measurement j s-1rggross count rate s-1rgjgross count rate for measurement j s-1rjnet count rate for measurement j s-1rscalibration source
43、 count rate s-1t time elapsed between separation of 90Sr/90Y (t = 0) and counting st0background counting time std, tfstart and finish time respectively of the measurement, referred to t = 0 stgsample counting time stjstart time of the measurement j, referred to t = 0 stscalibration source counting t
44、ime sU expanded uncertainty, calculated by U = ku(cA) with k = 1, 2 . Bq l-1u(cA) standard uncertainty associated with the measurement result Bq l-1V volume of the test sample licounting efficiency for radionuclide i 1idecay constant of radionuclide i 14 Principle4.1 General90Sr, 90Y and 89Sr are pu
45、re beta-emitter radionuclides. Their beta-emission energies and half-lives are given in Table 1.Table 1 Half-lives, maximum energies, and average energies of 90Sr, 90Y, and 89SrParameter90Sr90Y89SrMaximum energy 546,0 keV 2 283,9 keV 1 491,0 keVAverage energy 196,4 keV 935,3 keV 586,3 keVHalf-life 2
46、8,79 a 2,67 d 50,5 d90Sr can be directly measured or estimated through the measurement of its daughter product 90Y. All the test methods are based on a chemical separation step followed by beta-counting of the element using PC or LSC. See Table 2.4.2 Chemical separationStrontium is isolated from the
47、 water using precipitation, ion chromatography or specific chromatographic separation using crown ether resin. Yttrium can be isolated by precipitation or liquidliquid extraction.The separation step should maximize the extraction of the pure element. The method chosen shall be selective with a high
48、chemical yield. When thorium, lead or bismuth radioisotopes are present at high activity levels, DIN EN ISO 13160:2016-03 EN ISO 13160:2015(E)6 they may interfere with 90Sr, 90Y or 89Sr emission during the detection step. Other matrix constituents such as alkaline earth metals and in particular calcium for strontium, or transuranic and lanthanide elements for yttrium, reduce the chemical yield of the extraction.The radiochemical separation yield is calculated using a carrier such as stable strontium or yttrium, or a radioactive
