1、November 2010 Translation by DIN-Sprachendienst.English price group 16No 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).I
2、CS 13.040.40!$l1r“1731479www.din.deDDIN EN ISO 21258www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.This standard has been included in the VDI/DIN Handbook on air quality, Volume 5. Stationary source emissions Determination of the
3、mass concentration of dinitrogen monoxide (N2O) Reference method: Non-dispersive infrared method (ISO 21258:2010) English translation of DIN EN ISO 21258:2010-11 Emissionen aus stationren Quellen Bestimmung der Massenkonzentration von Distickstoffmonoxid (N2O) Referenzverfahren: Nicht-dispersives In
4、frarot-Verfahren (ISO 21258:2010) Englische bersetzung von DIN EN ISO 21258:2010-11 missions de sources fixes Dtermination de la concentration massique de protoxyde dazote (N2O) Mthode de rfrence: Mthode infrarouge non dispersive (ISO 21258:2010) Traduction anglaise de DIN EN ISO 21258:2010-11 3811.
5、10 11.10 DIN EN ISO 21258:2010-11 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee ISO/TC 146 “Air quality”, Subcommittee SC 1 “Stationary source emissions” in collaboration with Technical Committee CEN/TC 264 “Air quality” (Secretaria
6、t: DIN, Germany). The responsible German body involved in its preparation was the Kommission Reinhaltung der Luft (KRdL) im VDI und DIN Normenausschuss (Commission on Air Pollution Prevention of VDI and DIN Standards Committee), Section IV Umweltmesstechnik. The DIN Standards corresponding to the In
7、ternational Standards referred to in clause 2 of the EN are as follows: ISO 3534-2 E DIN ISO 3534-2 ISO 5725-2 DIN ISO 5725-2 ISO 9169 DIN EN ISO 9169 ISO 14956 DIN EN ISO 14956 ISO 20988 DIN EN ISO 20988 ISO/IEC Guide 98-3 DIN V ENV 13005 National Annex NA (informative) Bibliography DIN V ENV 13005
8、, Guide to the expression of uncertainty in measurement DIN EN ISO 9169, Air quality Definition and determination of performance characteristics of an automatic measuring system DIN EN ISO 14956, Air quality Evaluation of the suitability of a measurement procedure by comparison with a required measu
9、rement uncertainty DIN EN ISO 20988, Air quality Guidelines for estimating measurement uncertainty VDI 2469 Part 1, Gaseous emission measurement Measurenment of nitrous oxide Manual gas chromatographic method VDI 2469 Part 2, Gaseous emission measurement Measurement of nitrous oxide Automatic infrar
10、ed spectrometric method E DIN ISO 3534-2, Statistics Vocabulary and symbols Part 2: Applied statistics DIN ISO 5725-2, Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
11、 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 21258 June 2010 ICS 13.040.40 English Version Stationary source emissions - Determination of the mass concentration of dinitrogen monoxide (N2O) - Reference method: Non-dispersive infrared method (ISO 21258:2010) missions de sources fixes - D
12、termination de la concentration massique de protoxyde dazote (N2O) - Mthode de rfrence: Mthode infrarouge non dispersive (ISO 21258:2010) Emissionen aus stationren Quellen - Bestimmung der Massenkonzentration von Distickstoffmonoxid (N2O) - Referenzverfahren: Nicht-dispersives Infrarot-Verfahren (IS
13、O 21258:2010) This European Standard was approved by CEN on 19 May 2010. 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 bibliogra
14、phical references concerning such national standards may be obtained on application to the CEN 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
15、 CEN member into its own language and notified to the CEN 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, France, Germany, Greece, Hungary, Iceland
16、, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Ma
17、rnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 21258:2010: EContents 2 EN ISO 21258:2010 (E) DIN EN ISO 21258:2010-11 PageForeword3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms and d
18、efinitions .5 4 Symbols and abbreviated terms 9 5 Principle10 6 Description of the automated measuring equipment 10 6.1 General10 6.2 Sampling line components.11 6.3 Analyser equipment 12 6.4 Responsibilities .12 7 Performance criteria and determination of the performance characteristics .13 7.1 Per
19、formance criteria13 7.2 Determination of the performance characteristics and measurement uncertainty14 7.3 Establishment of the uncertainty budget14 8 Measurement procedure .15 8.1 Sampling location15 8.2 Sampling point(s).15 8.3 Choice of the measuring system .15 8.4 Setting of the analyser on site
20、16 9 Ongoing quality control 17 9.1 General17 9.2 Frequency of checks .17 10 Evaluation of the method in the field.18 11 Expression of results 18 12 Test report 19 Annex A (informative) Schematic diagram of a typical analyser .20 Annex B (normative) Procedures for determination of the performance ch
21、aracteristics during the general performance test21 Annex C (informative) Example of assessment of compliance of NDIR method for N2O with requirements on emission measurements .24 Annex D (informative) Results of comparison tests31 Annex E (informative) Leak test procedures 34 Bibliography 36 Forewo
22、rd This document (EN ISO 21258:2010) has been prepared by Technical Committee ISO/TC 146 Air quality” in collaboration with Technical Committee CEN/TC 264 “Air quality” the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publica
23、tion of an identical text or by endorsement, at the latest by December 2010, and conflicting national standards shall be withdrawn at the latest by December 2010. 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
24、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 Republic,
25、Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 21258:2010 has been ap
26、proved by CEN as a EN ISO 21258:2010 without any modification. 3 EN ISO 21258:2010 (E) DIN EN ISO 21258:2010-11 “ Introduction Dinitrogen monoxide (N2O, also known as nitrous oxide) is an important greenhouse gas with a global warming potential 310 times that of carbon dioxide (CO2). N2O is of both
27、natural and anthropogenic origin. Increased emissions of N2O have been observed, for example, in the exhaust gas of combustion processes using nitrogenous fuels at temperatures below 900 C, and in the reduction of NOxusing the selective non-catalytic reduction (SNCR) process, in particular when urea
28、 is used. There is considerable uncertainty over current N2O emissions, which is reflected in the wide range of emission factors cited. The largest uncertainties are for emissions from natural and agricultural sources, which are difficult to measure accurately. In the past, emissions from stationary
29、 sources such as coal-fired plants and industry were overestimated due to a serious artefact in the grab-sampling methodology used to measure emissions. N2O is involved in the EU emission trading scheme along with CO2and methane (CH4). Improved measurement techniques are helping to reduce uncertaint
30、ies in emission estimates. Improved measurement techniques are also a prerequisite for accurate information on N2O and its potential role in the enhanced greenhouse effect. 4 EN ISO 21258:2010 (E) DIN EN ISO 21258:2010-11 1 Scope This International Standard specifies a method for sampling, sample co
31、nditioning and determination of dinitrogen monoxide (N2O) content in the flue gas emitted from ducts and stacks to atmosphere. It sets out the non-dispersive infrared (NDIR) analytical technique, including the sampling system and sample gas conditioning system. This International Standard is a refer
32、ence method for periodic monitoring and for calibration, adjustment or control of automatic monitoring systems permanently installed on a stack. This reference method has been successfully tested on a sewage sludge incinerator where the N2O concentration in the flue gas was up to about 200 mg/m3. 2
33、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) applies. ISO 9169:2006, Air quality D
34、efinition and determination of performance characteristics of an automatic measuring system ISO 14956, Air quality Evaluation of the suitability of a measurement procedure by comparison with a required measurement uncertainty ISO/IEC Guide 98-3:2008, Uncertainty of measurement Part 3: Guide to the e
35、xpression of uncertainty in measurement (GUM:1995) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 influence quantity quantity that is not the measurand but that affects the result of the measurement ISO/IEC Guide 98-3:2008, B.2.10 3.2 interf
36、erence negative or positive effect upon the response of the measuring system, due to a component of the sample that is not the measurand 5 EN ISO 21258:2010 (E) DIN EN ISO 21258:2010-11 3.3 interferent interfering substance substance present in the air mass under investigation, other than the measur
37、and, that affects the response ISO 9169:2006, 2.1.12 3.4 lack of fit systematic deviation within the range of application between the measurement results obtained by applying the calibration function to the observed response of the measuring system measuring reference materials and the corresponding
38、 accepted value of such reference materials NOTE 1 Lack of fit may be a function of the measurement result. ISO 9169:2006, 2.2.9 NOTE 2 The expression “lack of fit” is often replaced in everyday language for linear relations by “linearity” or “deviation from linearity”. 3.5 measurand particular quan
39、tity subject to measurement ISO/IEC Guide 98-3:2008, B.2.9 3.6 performance characteristic one of the quantities assigned to equipment in order to define its performance NOTE Performance characteristics can be described by values, tolerances, or ranges. 3.7 reference gas gaseous mixture of stable com
40、position used to calibrate the reference measuring system and which is traceable to national or international standards 3.8 reference method measurement method taken as a reference by convention, which gives the accepted reference value of the measurand 3.9 repeatability in the laboratory precision
41、under repeatability conditions in the laboratory NOTE 1 Repeatability can be expressed quantitatively in terms of the dispersion characteristics of the results. In this International Standard, the repeatability is expressed as a value with a level of confidence of 95 %. NOTE 2 Adapted from ISO 3534-
42、2:20061, 3.3.5. 3.10 repeatability conditions in the laboratory observation conditions where independent test results are obtained with the same method on identical test items in the same test or measuring facility by the same operator using the same equipment within short intervals of time in the l
43、aboratory NOTE 1 Repeatability conditions in the laboratory include: the same measurement procedure at the same laboratory; 6 EN ISO 21258:2010 (E) DIN EN ISO 21258:2010-11 the same operator; the same measuring instrument used under the same conditions; the same location; repetition over a short per
44、iod of time. NOTE 2 Adapted from ISO 3534-2:20061, 3.3.6. 3.11 repeatability in the field precision under repeatability conditions in the field NOTE 1 Repeatability can be expressed quantitatively in terms of the dispersion characteristics of the results. In this International Standard the repeatabi
45、lity under field conditions is expressed as a value with a level of confidence of 95 %. NOTE 2 Adapted from ISO 3534-2:20061, 3.3.5. 3.12 repeatability conditions in the field observation conditions where independent test results are obtained with the same method on identical test items in the same
46、test or measuring facility by the same operator using the same equipment within short intervals of time in the field NOTE 1 Repeatability conditions in the field include: the same measurement procedure; two sets of equipment, the performance of which fulfils the requirements of the reference method,
47、 used under the same conditions; the same location; implemented by the same laboratory; typically calculated on short periods of time in order to avoid the effect of changes of influence parameters. NOTE 2 Adapted from ISO 3534-2:20061, 3.3.6. 3.13 reproducibility in the field precision under reprod
48、ucibility conditions in the field NOTE 1 Reproducibility in the field can be expressed quantitatively in terms of the dispersion characteristics of the results. In this International Standard the reproducibility under field conditions is expressed as a value with a level of confidence of 95 %. NOTE
49、2 Adapted from ISO 3534-2:20061, 3.3.10. NOTE 3 Results are usually understood to be corrected results. 3.14 reproducibility conditions in the field observation conditions where independent test results are obtained with the same method on identical test items in different test or measurement facilities with different operators using different equipment in the field NOTE 1 Reproducibility conditions in the field include: the same measurement procedure; 7 EN ISO 21258:2010 (E) DIN EN
