ISO INTERNATIONAL STANDARD 25139 First edition 2011-04-15 Stationary source emissions Manual method for the determination of the methane concentration using gas chromatography Emissions de sources fixes - Methode manuelle pour la determination de la concentration en methane par chromatographie en phase gazeuse Reference number ISO 25139:2011(E) @ ISO 2011 y IHS under ds Bodies 5001, User=bao, zhou ISO 25139:2011(E) COPYRIGHTPROTECTEDDOCUMENT @ ISO2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either isO at the address below or IsO's memberbody in the country of the requester. ISO copyright office Case postale 56 : CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISO 2011 - All rights reserved ed by IHS unde ards Bodies ISO 25139:2011(E) Contents Page Foreword Introduction 1 Scope 2 Normative references. 3 Terms and definitions 4 Symbols and abbreviated terms 5 Principle 6 Equipment... 6.1 Samplingsystem 6.2 Analytical apparatus < Measurement procedure. 7.1 .6 7.2 Sampling. 7.3 Analytical determination.. 7.4 Interferents. .8 8 Calculation of the results . 8 9 Quality assurance and quality control procedures, 10 9.1 General. 10 9.2 Criteria and frequency of checks.. 10 9.3 Performing the checks.. 9.4 Check of the measurement system 12 10 Performance characteristics 12 11 Test report... Annex A (normative) Operational gases .. 13 Annex B (normative) Quality assurance and quality control procedures 14 Annex C (informative) Typical performance characteristics. 16 Bibliography.... 18 ili