ISO INTERNATIONAL STANDARD 18227 First edition 2014-03-01 Soil quality - Determination of elemental composition by X-ray fluorescence Qualite du sol - Détermination de la composition élementaire par fluorescence X Reference number ISO 18227:2014(E) LSO IS02014 IHS under ted without license from IHS Not for Resale IS0 18227:2014(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body 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 @ IS0 2014 - All rights reserved No reproductic networking permited without license from IHS Not for Resale IS0 18227:2014(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references ..1 3 Terms and definitions 4 Safety remarks. .3 5 Principle. ..3 6 Apparatus ..3 7 Reagents ..4 8 Interferences and sources of error ..5 9 Sample preparation. .5 9.1 General .5 9.2 Drying and determination of dry mass .6 9.3 Preparationofpressedpellet ..6 9.4 Preparation of fused beads 10 Procedure .7 10.1 Analytical measurement conditions ..7 10.2 Calibration .8 11 Quality control .13 11.1 Drift correction procedure .13 11.2 Blank test. ..14 11.3 Reference materials ..14 12 Calculation of the result ..14 13 Testreport .14 Annex A (informative) Semi-quantitative screening analysis of waste, sludge, and soil samples....15 Annex B (informative) Examples for operational steps of the sample preparation for soil and waste samples .18 Annex C (informative) Suggested analytical lines, crystals, and operating conditions .23 Annex D (informative) List of reference materials applicable for XRF analysis ..26 Annex E (informative) Validation. .28 Bibliography .37 iii se with I thout license from IHS Not for Resale