ISO INTERNATIONAL STANDARD 12926 First edition 2012-12-15 Aluminium fluoride for industrial use Determination of trace elements Wavelength dispersive X-ray fluorescence spectrometric method using pressed powder tablets Fluorure d'aluminium a usage industriel - Détermination d'élements traces - Méthode par spectrométrie de fluorescence des rayons X a dispersion de longueur d'onde utilisant des pastilles de poudre pressée Reference number ISO 12926:2012(E) ISO @ISO2012 ed without license from IHS Not for Resale IS0 12926:2012(E) COPYRIGHT PROTECTED DOCUMENT ISO 2012 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 addressbeloworIso'smemberbodyinthecountryoftherequester. ISO copyright office Case postale 56 : CH-1211 Geneva 20 Tel.+41227490111 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ IS0 2012 - All rights reserved Not for Resale IS0 12926:2012(E) Contents Page Foreword .iv Introduction. ..V 1 Scope. ..1 2 Normative references ..1 3 Principle 4 Reagents and materials. ..2 5 Apparatus. .2 6 Test procedure .3 6.1 Test specimen preparation .3 6.2 Addition of binder method .3 6.3 Backing method. .4 6.4 X-ray fluorescence spectrometer application 6.5 Monitor sample for correction of instrumental drift .6 6.6 Analysis, calculation and expression of results .6 7 Precision .6 7.1 General. .6 7.2 How to use Table 4 using sodium (Na) as an example 7.3 How to use Table 4 using sulfur (S) as an example 7 8 Test report. .8 Annex A (informative) Conversion table .9 Bibliography .10 ii vithout license from IHS Not for Resale