ISO INTERNATIONAL STANDARD 11533 Second edition 2009-06-15 Iron ores Determination of cobalt Flame atomic absorption spectrometric method Minerais de fer Dosage du cobalt Methode par spectrométrie d'absorption atomique dans la flamme Reference number ISO 11533:2009(E) @ISO 2009 py IHS under lic ted without license from IHS Not for Resale ISO11533:2009(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below COPYRIGHT PROTECTED DOCUMENT ISO2009 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, 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 copyright@iso.org Web www.iso.org Published in Switzerland @ IS0 2009 - All rights reserved I without license from IHS Not for Resale ISO 11533:2009(E) Contents Page Foreword .iv 1 Scope 2 Normative references 3 Principle.. 4 Reagents. 5 Apparatus. 6 Sampling and samples. 6.1 Laboratory sample .. 6.2 Preparation of predried test samples.... 7 Procedure... 7.1 Number of determinations. 7.2 Test portion.. 7.3 Blank test and check test ... 7.4 7.4.1 Decomposition of the test portion 7.4.2 Treatment of residue ... 7.4.3 Treatment of combined filtrate and washings. 7.4.4 Preparation of the set of calibration solutions.... 7.4.5 Adjustmentofatomicabsorptionspectrometer 7.4.6 Atomic absorption measurements . 8 Expression of results.. 8.1 Calculationofmassfractionofcobalt. 8.2 General treatment of results.... 8.2.1 Repeatability and permissible tolerances 8.2.2 Determination of analytical result..... 8.2.3 Between-laboratories precision. 8.2.4 Check for trueness.... 8.2.5 Calculation of final result.. 8.3 Oxide factor.... 9 Test report. 9 Annex A (normative) Flowsheet of the procedure for the acceptance of analytical values for test .10 Annex B (informative) Derivation of repeatability and permissible tolerance equations.... 11 Annex C (informative) Precision data obtained by international analytical trials...... 12 Copyrght International Organizaionsandardizalonghts reserved ii Not for Resale