TECHNICAL ISO/TR REPORT 16043 Firstedition 2015-10-15 Iron ores Determination of chlorine content X-ray fluorescence spectrometric method Minerais de fer - Dosage du chlore - Méthode par spectrométrie de fluorescence de rayons X Reference number ISO/TR 16043:2015(E) SO International Organization for Standardization @ IS0 2015 ZHEJIANG INST OF STANDARDIZATION C1 5956617 vided by IHS underI itted without license from IHS IS0/TR 16043:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2015, 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+412274909 47 [email protected] www.iso.org Intenatinir PrganizationforStandardization -","","." see-ZHEJIANG INSTOF STANDARDIZARoISQ015- All rights reserved etworking permitted without license from IHS IS0/TR 16043:2015(E) Contents Page Foreword ..V Introduction. ...vi 1 Scope.... 2 Principle ...1. 3 Reagents and materials. 4 Apparatus ..2 5 Sampling and samples. ..3 5.1 Laboratory sample. .3 5.2 Preparation of test sample .3 5.2.1 Preparation of pre-dried test samples 3 5.2.2 Ores having significant contents of combined water or oxidizable compounds....4 6 Procedure ..4 6.1 Preparation of discs. .4 6.1.1 General. ..4 6.1.2 Weighing. 4 6.1.3 Mixing. 6.1.4 Fusion .5 6.1.5 Casting ..5 6.1.6 Calibration discs .5 6.1.7 Test discs. .6 6.1.8 Visual inspection .6 6.1.9 Disc storage. ..6 6.1.10 Cleaning of platinum ware 6.2 Measurements .7 6.2.1 General. 6.2.2 Analytical lines. 7 6.2.3 XRF generator settings ..7 6.2.4 Crystals. .7 6.2.5 Counting times. .7 6.2.6 Collimators.. .8 6.2.7 Simultaneous-type instruments 8 6.2.8 Sample holders. 6.2.9 Subsequent determinations. ..8 7 Calculation of results .8 7.1 General 7.2 Correction for background .9 7.3 Calibration ..9 8 General treatment of results. ..10 8.1 Acceptability of background equivalent concentration (BEC) ..10 8.2 Repeatability and permissibletolerances .10 8.3 Determinationofanalyticalresult ..11 8.3.1 Mean of duplicates.. ..11 8.3.2 Between-laboratories precision ..11 8.4 Check for trueness. .11 8.5 Calculation of final result .12 8.6 Oxide factor ..12 9 Test report .12 Annex A (informative) Preparation of flux A ..13 Annex B (informative) Preparation of flux B .15 iii Isee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 d without license from IHS Not for Resale, 2016/1/8 02:46:50