DIN EN ISO 10703-2015 Water quality - Determination of the activity concentration of radionuclides - Method by high resolution gamma-ray spectrometry (ISO 10703 2007) German versio.pdf

1、December 2015 English price group 14No 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!%J“2399357www

2、.din.deDIN EN ISO 10703Water quality Determination of the activity concentration of radionuclides Method by high resolution gamma-ray spectrometry (ISO 10703:2007);English version EN ISO 10703:2015,English translation of DIN EN ISO 10703:2015-12Wasserbeschaffenheit Bestimmung der Aktivittskonzentrat

3、ion von Radionukliden Verfahren mittels hochauflsender Gammaspektrometrie (ISO 10703:2007);Englische Fassung EN ISO 10703:2015,Englische bersetzung von DIN EN ISO 10703:2015-12Qualit de leau Dtermination de lactivit volumique des radionuclides Mthode par spectromtrie gamma haute rsolution (ISO 10703

4、:2007);Version anglaise EN ISO 10703:2015,Traduction anglaise de DIN EN ISO 10703:2015-12SupersedesDIN 38404-16:1989-04www.beuth.deDocument comprises 29 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.12.15 2 A comma is used as

5、 the decimal marker. National foreword The text of ISO 10703:2007 has been prepared by Technical Committee ISO/TC 147 “Water quality” and has been taken over as EN ISO 10703:2015 by Technical Committee CEN/TC 230 “Water analysis” (Secretariat: DIN, Germany). The responsible German body involved in i

6、ts preparation was DIN-Normenausschuss Wasserwesen (DIN Standards Committee Water Practice), Working Committee NA 119-01-03 AA Wasseruntersuchung. Designation of the method: Determination of the activity concentration of radionuclides Method by high resolution gamma-ray spectrometry Method DIN EN IS

7、O 10703 C 16 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 31-9 DIN EN ISO 80000-10 ISO/IEC 17025 DIN EN ISO/IEC 17025 DIN EN

8、ISO 10703:2015-12 3 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-case basis as to whether and to what

9、 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 Chemiker (Water Chemistry Society Div

10、ision 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): Determination of the activity concentration of radionuclides Method by high resolu

11、tion gamma-ray spectrometry (C16). 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-, Abwasser- und Schlammuntersuch

12、ung will continue to be published by Beuth Verlag GmbH and Wiley-VCH Verlag GmbH b) the title of the standard has been modified; c) the method specified in ISO 10703:2007 has been adopted without any modification. Previous editions DIN 38404-16: 1989-04 National Annex NA (informative) Bibliography D

13、IN EN ISO 5667-1, Water quality Sampling Part 1: Guidance on the design of sampling programmes and sampling techniques DIN EN ISO 5667-3, Water quality Sampling Part 3: Preservation and handling of water samples*)DIN EN ISO 80000-10, Quantities and units Part 10: Atomic and nuclear physics DIN EN IS

14、O/IEC 17025, General requirements for the competence of testing and calibration laboratories DIN ISO 3696, Water for analytical laboratory use Specification and test methods DIN ISO 5667-14, Water quality Sampling Part 14: Guidance on quality assurance of environmental water sampling and handling *)

15、Here: revised version DIN EN ISO 5667-3:2013-03 on the basis of ISO 5667-3:2012-11, which has replaced ISO 5667-3, cited in Clause 2 of this standard. DIN EN ISO 10703:2015-12 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 10703 October 2015 ICS 13.060.60; 17.240 English Version Water qual

16、ity - Determination of the activity concentration of radionuclides - Method by high resolution gamma-ray spectrometry (ISO 10703:2007) Qualit de leau - Dtermination de lactivit volumique des radionuclides - Mthode par spectromtrie gamma haute rsolution (ISO 10703:2007) Wasserbeschaffenheit - Bestimm

17、ung der Aktivittskonzentration von Radionukliden - Verfahren mittels hochauflsender Gammaspektrometrie (ISO 10703:2007) This European Standard was 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

18、 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 offici

19、al 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 A

20、ustria, 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, Slovakia, Slovenia, Spain, Sw

21、eden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION C O MIT E U R O P EN D E N O RMA L I S A T IO N EU ROP IS CH ES K OMITEE F R NORMU N G CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any mean

22、s reserved worldwide for CEN national Members. Ref. No. EN ISO 10703:2015 E Contents Page Foreword 4 Introduction 5 1 Scope . 6 2 Normative references . 6 3 Terms and definitions. 7 4 Symbols and units 9 5 Principle. 10 6 Reference sources 10 7 Reagents 10 8 Gamma spectrometry equipment 11 9 Samplin

23、g 13 10 Procedure 13 11 Expression of results . 16 12 Test report . 21 Annex A (informative) Example of a carrier solution which can be added to the water sample when waste water from a nuclear power plant is investigated 22 Annex B (informative) Calculation of the activity concentration from a gamm

24、a spectrum using a linear background subtraction (undisturbed peak) 23 Bibliography . 25 European foreword 3 2DIN EN ISO 10703:2015-12 EN ISO 10703:2015 (E) European foreword The text of ISO 10703:2007 has been prepared by Technical Committee ISO/TC 147 “Water quality” of the International Organizat

25、ion for Standardization (ISO) and has been taken over as EN ISO 10703:2015 by 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

26、, 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 be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any

27、 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, Former Yugoslav Republ

28、ic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 10703:2007 has been appr

29、oved by CEN as EN ISO 10703:2015 without any modification. 3DIN EN ISO 10703:2015-12 EN ISO 10703:2015 (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 no

30、rmally 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

31、 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. The main task of technical committees is to prepa

32、re 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 vote. Attention is drawn to the possibility that so

33、me 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 10703 was prepared by Technical Committee ISO/TC 147, Water quality. This second edition cancels and replaces the first edition (ISO 10703:199

34、7), which has been technically revised. 4DIN EN ISO 10703:2015-12 EN ISO 10703:2015 (E) Introduction This International Standard allows (after proper sampling, sample handling and, when necessary or desirable, sample preparation) the simultaneous determination of the activity concentration of severa

35、l gamma-ray emitting radionuclides in water samples by gamma-ray spectrometry using high purity germanium HPGe detectors. Gamma-ray emitting radionuclides are widespread both as naturally occurring and as man-made radionuclides. Therefore, environmental samples usually contain a multitude of differe

36、nt gamma-ray emitters and high resolution gamma-ray spectrometry provides a useful analytical tool for environmental measurements. 5DIN EN ISO 10703:2015-12 EN ISO 10703:2015 (E) WARNING Persons using this International Standard should be familiar with normal laboratory practice. This International

37、Standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions. IMPORTANT It is absolutely essential that test

38、s conducted in accordance with this International Standard be carried out by suitably trained staff. 1 Scope This International Standard specifies a method for the simultaneous determination of the activity concentration of various radionuclides emitting gamma rays with energies 40 keV 1 022 keV), C

39、ompton scattering and photoelectric absorption 3.8 gamma cascade two or more different gamma-photons emitted successively within the resolution time, from one nucleus when it de-excites through one or more intermediate energy levels 3.9 gamma radiation electromagnetic radiation emitted in the proces

40、s of nuclear transition or particle annihilation 3.10 gamma-ray spectrometry method of measuring gamma rays yielding the energy spectrum of the gamma radiation 3.11 pile-up processing by a radiation spectrometer of pulses resulting from the simultaneous absorption of particles, or photons, originati

41、ng from different decaying nuclei, in the radiation detector. NOTE As a result, they are counted as one single particle or photon with an energy between the individual energies and the sum of these energies. 3.12 transition probability fraction of the nuclei which disintegrates in a specific way 8DI

42、N EN ISO 10703:2015-12 EN ISO 10703:2015 (E) 4 Symbols and units V Volume of the water sample for test, in litres A Activity of each radionuclide in calibration source, at the calibration time, in becquerels ,c,AAcc Activity concentration1)of each radionuclide, without and with corrections, expresse

43、d in becquerels per litre tgSample spectrum counting time, in seconds t0Background spectrum counting time, in seconds ts Calibration spectrum counting time, in seconds ,0,s,NE N E N Enn n Number of counts in the net area of the peak, at energy E, in the sample spectrum, in the background spectrum an

44、d in the calibration spectrum, respectively g, g0, gs,E EEnn n Number of counts in the gross area of the peak, at energy E, in the sample spectrum, in the background spectrum and in the calibration spectrum, respectively b, b0, bs,E EEnn n Number of counts in the background of the peak, at energy E,

45、 in the sample spectrum in the background spectrum and in the calibration spectrum, respectively E Efficiency of the detector at energy E at actual measurement geometry EP Probability of the emission of a gamma ray with energy E of each radionuclide, per decay Decay constant of each radionuclide, in

46、 reciprocal seconds ,c(),( )AAuc uc Standard uncertainty associated with the measurement result, without and with corrections, in becquerels per litre U Expanded uncertainty calculated by ( )AUkuc= with k = 1, 2., in becquerels per litre ,c,AAccDecision threshold, without and with corrections, in be

47、cquerels per litre #,c,AAcc Detection limit, without and with corrections, in becquerels per litre ,AAccLower and upper limits of the confidence interval, in becquerels per litre 1) “Volumic activity” is an alternative name for “Activity concentration“. 9DIN EN ISO 10703:2015-12 EN ISO 10703:2015 (E

48、) 5 Principle Gamma rays cause electron-hole pairs when interacting with matter. When a voltage is applied across a semiconductor detector, these electron hole-pairs are, after proper amplification, detected as current pulses. The pulse height is related to the energy absorbed from the gamma-photon

49、or photons in the resolving time of the detector and electronics. By discriminating between the height of the pulses, a gamma-ray pulse height spectrum is obtained. After analysis of the spectrum, the various peaks are assigned to the radionuclides which emitted the corresponding gamma rays using the previously obtained energy detector calibration. The concentration of the radionuclides present in the sample is calculate