ISO INTERNATIONAL STANDARD 15237 Second edition 2016-11-15 Solid mineral fuels Determination of total mercury content of coal Combustibles minéraux solides - Dosage du mercure total dans le charbon Reference number A ISO 15237:2016(E) ISO International Organization for Standardization @IS02016 vided by IHS under itted without license from IHS IS0 15237:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2016, 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 icopyright@iso.org www.iso.org Intenatinair PrganizationforStandardization etworking permitted without license from IHS IS0 15237:2016(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Terms and definition 4 Principle ..1 5 Reagents. ..1 6 Apparatus. ..2 7 Preparation of sample ..3 8 Oxygen bomb combustion procedure ..3 8.1 General 8.2 Combustion of coal. .3 9 Preparation of test solution ..3 10 Atomic absorption analysis ..4 10.1 Calibration 10.2 Analytical procedure ..4 11 Expression of results ..5 12 Precision ..5 12.1 Repeatability limit 12.2 Reproducibility critical difference ..5 13 Test report. .5 iii vided by IHS under lic d without license from IHS