ISO INTERNATIONAL STANDARD 11480 Second edition 2017-05 Pulp, paper and board Determination of total chlorine and organically bound chlorine Pates, papier et carton - Dosage du chlore total et du chlore lie aux matieres organiques Reference number IS0 11480:2017(E) International Organization for Standardization @ IS0 2017 =ZHEJIANG INST OF STANDARDIZATION C1 5956617 vided by IHS under I ted without license from IHS IS0 11480:2017(E) COPYRIGHT PROTECTED DOCUMENT @ IS0 2017, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either Iso at the address below or Iso's member body in the country of the requester. ISOcopyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Internatinir DrganizationforStandardization Licensee-ZHEJIANG INST OF STANDARDIZzRoISQ7 - All rights reserved No reproduction or networking permited without license from IHS IS0 11480:2017(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Terms and definitions ..1 4 Microcoulometric method ..1 4.1 Principle. .1 4.2 Chemicals and reagents .2 4.3 Precautions 2 4.4 Apparatus .2 4.5 Pretreatment of the sample .3 4.6 Extractionwithacidnitratesolution .4 4.7 Combustion 4 4.8 Blanks. .5 4.9 Checks. .5 4.10 Calculation 5 4.11 Interference from bromine compounds .5 5 Schoniger method .6 5.1 Principle.. .6 5.2 Chemicals and reagents 6 5.3 Precautions .7 5.4 Apparatus. 5.5 Sampling and sample preparation 7 5.6 Extractionwithacidnitratesolution .8 5.7 Combustion .8 5.8 Ion chromatographic determination .8 5.9 Blanks .9 5.10 Calculation .9 Test report 6 Annex A (informative) Precision (Microcoulometric method) .11 Annex B (informative) Precision (Schoniger method) .13 Annex C (informative) Laboratory manuals .15 Bibliography .16 iii ee=ZHEJIANG INSTOFSTANDARDIZATION C15956617 vided by IHS under lic d without license from IHS Not for Resale, 2017/8/21 01:18:55