DIN EN ISO 9698-2015 Water quality - Determination of tritium activity concentration - Liquid scintillation counting method (ISO 9698 2010) German version EN ISO 9698 2015《水质 硫活性浓度.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!%IV=“2385126www.din.d

2、eDIN EN ISO 9698Water quality Determination of tritium activity concentration Liquid scintillation counting method (ISO 9698:2010);English version EN ISO 9698:2015,English translation of DIN EN ISO 9698:2015-12Wasserbeschaffenheit Bestimmung der Aktivittskonzentration von Tritium Verfahren mit dem F

3、lssigszintillationszhler (ISO 9698:2010);Englische Fassung EN ISO 9698:2015,Englische bersetzung von DIN EN ISO 9698:2015-12Qualit de leau Dtermination de lactivit volumique du tritium Mthode par comptage des scintillations en milieu liquide (ISO 9698:2010);Version anglaise EN ISO 9698:2015,Traducti

4、on anglaise de DIN EN ISO 9698:2015-12SupersedesDIN 38404-13:1988-05www.beuth.deDocument comprises 32 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.11.15 DIN EN ISO 9698:2015-12 2 A comma is used as the decimal marker. Nation

5、al foreword The text of ISO 9698:2010 has been prepared by Technical Committee ISO/TC 147 “Water quality” and has been taken over as EN ISO 9698:2015 by Technical Committee CEN/TC 230 “Water analysis” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was DIN-Normen

6、ausschuss Wasserwesen (DIN Standards Committee Water Practice), Working Committee NA 119-01-03 AA Wasseruntersuchung. Designation of the method: Determination of tritium activity concentration - Liquid scintillation counting method (C 13): Method DIN EN ISO 9698 C 13 The DIN Standards corresponding

7、to the International Standards referred to in this document are as follows: ISO 5667-1 DIN EN ISO 5667-1 ISO 5667-3 DIN EN ISO 5667-3 ISO 5667-14 DIN ISO 5667-14 ISO 80000-10 DIN EN ISO 80000-10 ISO/IEC 17025 DIN EN ISO/IEC 17025 Expert assistance and specialized laboratories will be required to per

8、form 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 extent additional conditions will have to be specified. This standard has been prepared b

9、y DIN-Normenausschuss Wasserwesen (DIN Standards Committee Water Practice) in collaboration with the Wasserchemische Gesellschaft - Fachgruppe in der Gesellschaft Deutscher Chemiker (Water Chemistry Society Division of the German Chemical Society). It is part of the series Deutsche Einheitsverfahren

10、 zur Wasser-, Abwasser- und Schlammuntersuchung (German standard methods for the examination of water, waste water and sludge): Determination of tritium activity concentration Liquid scintillation counting method (C 13). Standard methods published as DIN Standards are obtainable from Beuth Verlag Gm

11、bH, either individually or grouped in volumes. The standard methods included in the loose-leaf publication entitled Deutsche Einheitsverfahren zur Wasser-, Abwasser- und Schlammuntersuchung will continue to be published by Beuth Verlag GmbH and Wiley-VCH Verlag GmbH b) the content of ISO 9698:2010 h

12、as been adopted in full; c) the lower detection limit may now be as low as 1 Bq/l; tritium activity concentrations below 106Bq/l can be determined without any sample dilution. d) the standard has been editorially revised. Previous editions DIN 38404-13: 1988-05 DIN EN ISO 9698:2015-12 4 National Ann

13、ex NA (informative) Bibliography DIN 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: At

14、omic and nuclear physics DIN EN ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories DIN ISO 5667-14, Water quality Sampling Part 14: Guidance on quality assurance of environmental water sampling and handling *)Here: revised version DIN EN ISO 5667-3:2013-03

15、 on the basis of ISO 5667-3:2012-11, which has replaced ISO 5667-3, cited in Clause 2 of this standard. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 9698 July 2015 ICS 13.080; 13.060.60 English Version Water quality - Determination of tritium activity concentration - Liquid scintillation

16、 counting method (ISO 9698:2010) Qualit de leau - Dtermination de lactivit volumique du tritium - Mthode par comptage des scintillations en milieu liquide (ISO 9698:2010) Wasserbeschaffenheit - Bestimmung der Aktivittskonzentration von Tritium - Verfahren mit dem Flssigszintillationszhler (ISO 9698:

17、2010) This European Standard was approved by CEN on 16 July 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

18、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

19、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 Mace

20、donia, France, Germany, Greece, 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 EUR

21、OPISCHES KOMITEE FR NORMUNG 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 9698:2015 EContents Page European foreword.3 Introduction.4 1 Scope5 2 Normative

22、references5 3 Symbols, definitions and units 6 4 Principle .7 5 Reagents and equipment7 6 Sampling and samples9 7 Procedure.10 8 Expression of results12 9 Test report14 Annex A (informative) Numerical applications .16 Annex B (informative) Distillation of large volume sample .18 Annex C (informative

23、) Internal standard methods21 Annex D (informative) Distillation of small volume sample.23 Annex E (informative) Screening method for wet matrices.26 Bibliography28 DIN EN ISO 9698:2015-12 EN ISO 9698:2015 (E) 2 European foreword The text of ISO 9698:2010 has been prepared by Technical Committee ISO

24、/TC 147 “Water quality” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 9698:2015 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

25、by publication of an identical text or by endorsement, at the latest by January 2016, and conflicting national standards shall be withdrawn at the latest by January 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

26、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, Belgium, Bulgaria, Croatia, Cyprus, Czech Re

27、public, 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, Switzerland, Turkey and the United Kingdom. En

28、dorsement notice The text of ISO 9698:2010 has been approved by CEN as EN ISO 9698:2015 without any modification. DIN EN ISO 9698:2015-12 EN ISO 9698:2015 (E) 3 Introduction The tritium present in the environment is of natural origin and man made. As a result of atmospheric nuclear weapon testing, e

29、missions from nuclear engineering installations, and the application and processing of isotopes, relatively large amounts of tritium have been released to the environment. Despite the low dose factor associated to tritium, monitoring of tritium activity concentrations in the environment is necessary

30、 in order to follow its circulation in the hydrosphere and biosphere. DIN EN ISO 9698:2015-12 EN ISO 9698:2015 (E) 4 WARNING This International 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 appropri

31、ate safety and health practices and to ensure compliance with any national regulatory conditions. IMPORTANT It is absolutely essential that tests conducted according to this International Standard be carried out by suitably trained staff. 1 Scope This International Standard specifies the conditions

32、for the determination of tritium activity concentration in samples of environmental water or of tritiated water (3HH2O) using liquid scintillation counting. The choice of the analytical procedure, either with or without distillation of the water sample prior to determination, depends on the aim of t

33、he measurement and the sample characteristics (see References 1, 2, 3). Direct measurement of a raw water sample using liquid scintillation counting has to consider the potential presence of other beta emitter radionuclides. To avoid interference with these radionuclides when they are detected, the

34、quantification of tritium will be performed following the sample treatment by distillation (see References 4, 5, 6, 7). Three distillation procedures are described in Annexes B, D and E. The method is not applicable to the analysis of organically bound tritium; its determination requires additional

35、chemical processing (such as chemical oxidation or combustion). With suitable technical conditions, the detection limit may be as low as 1 Bq l1. Tritium activity concentrations below 106Bq l1can be determined without any sample dilution. A prior enrichment step can significantly lower the limit of

36、detection (see References 8, 9). 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) ap

37、plies. ISO 5667-1, Water quality Sampling Part 1: Guidance on the design of sampling programmes and sampling techniques ISO 5667-3, Water quality Sampling Part 3: Guidance on the preservation and handling of water samples ISO 5667-14, Water quality Sampling Part 14: Guidance on quality assurance of

38、environmental water sampling and handling ISO 80000-10, Quantities and units Part 10: Atomic and nuclear physics ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories DIN EN ISO 9698:2015-12 EN ISO 9698:2015 (E) 5 ISO/IEC Guide 98-3:2008, Uncertainty of measu

39、rement Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) ISO/IEC Guide 99:2007, International vocabulary of metrology Basic and general concepts and associated terms (VIM) 3 Symbols, definitions and units For the purposes of this document, the definitions, symbols and units de

40、fined in ISO 80000-10, ISO/IEC Guide 98-3 and ISO/IEC Guide 99, as well as the following symbols, apply. maxMaximum energy for the beta emission, in kilo-electronvolts V Volume of test sample, in litres m Mass of test sample, in kilograms Mass density of the sample, in grams per litre cAActivity con

41、centration, in becquerels per litre a Activity per unit of mass, in becquerels per kilogram A Activity of the calibration source, in becquerels t0Background counting time, in seconds tgSample counting time, in seconds tsCalibration counting time, in seconds n Number of repetitions r0iBackground coun

42、t rate in the repetition i, per second r0Mean background count rate for i repetitions, per second rgiSample count rate in the repetition i, per second rgMean sample count rate for i repetitions, per second rsCalibration count rate, per second Detection efficiency qEfficiency measured for each of the

43、 working standards to elaborate the quench curve fqQuench factor u(cA) Standard uncertainty associated with the measurement result, in becquerels per litre U Expanded uncertainty, calculated by U = k u(cA) with k = 1, 2, in becquerels per litre *Ac Decision threshold, in becquerels per litre #Ac Det

44、ection limit, in becquerels per litre ,A Acc#AcNg210 225 390 tgs 3 600 3 600 3 600 rgs10,058 3 0,062 5 0,108 3 N0180 180 180 t0s 3 600 3 600 3 600 r0s10,050 0,050 0,050 V l 0,010 0,010 0,010 u(V) l 0,002 5 0,002 5 0,002 5 0,25 0,25 0,25 urel() 0,035 0,035 0,035 , , % 5 5 5 w l1400 400 400 urel(w) 0,

45、252 0,252 0,252 0,922 0 0,974 2 0,999 8 p 0,898 9 0,949 9 0,974 9 q 0,977 0 0,975 6 0,975 0 kp 1,275 1,644 1,957 kq 1,994 1,971 1,960 cABq l13,33 5,00 23,33 u(cA) Bq l12,35 2,57 6,46 *Ac Bq l13,47 3,47 3,47 #Ac Bq l18,74 8,74 8,74 AcBq l18,02 10,06 36,00 Ngand N0are the number of the counted impulsi

46、ons for the sample and for the background, respectively. DIN EN ISO 9698:2015-12 EN ISO 9698:2015 (E) 16 For example, functions to calculate , kp, kq, in Excel1)are: = NORMSDIST ( ()Auc / ) Ackp= NORMSINV (p) kq= NORMSINV (q) 1) Microsoft Excel is an example of a suitable product available commercially. This information is given for the convenience of users of this International Standard and does not constitute an endorsement by ISO of this product.DIN EN ISO 9698:2015-12 EN ISO 9698:2015 (E) 17 Annex B (informative) Distillation of large volume sample B.1 Pri