ISO INTERNATIONAL STANDARD 17075-2 IULTCS/IUC 18-2 First edition 2017-02 Leather Chemical determination of chromiumVD content in leather . Part 2: Chromatographic method Cuir - Détermination chimique de la teneur en chrome(Vl) du cuir - Partie 2: Méthode chromatographique Reference numbers IS0 17075-2:2017(E) IULTCS/IUC 18-2:2017(E) International Organization for Standardization e=ZHEJIANG INST OF STANDARDIZATION C1 5956617 @IS02017 Not for Resale, 2017/5/11 02:25:07 ed without license from IHS IS0 17075-2:2017(E) IULTCS/IUC 18-2:2017(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2017, 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. ISO copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Licensee-ZHEJIANG INST OF STANDARDIZzRoISQ7 - All rights reserved Not for Resale, 2017/5/11 02:25:07 No reproduction or networking permited without license from IHS IS0 17075-2:2017(E) IULTCS/IUC 18-2:2017(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references ..1 3 Terms and definitions 4 Principle ..2 5 Chemicals ..2 6 Apparatus and materials. .2 7 Procedure .3 7.1 Sampling and preparation of samples .3 7.2 Preparation of analytical solution .3 7.3 Chromatographic conditions .4 7.4 Calibration .4 7.5 Determination of the recovery rate ..5 8 Calculation and expression of results 5 8.1 Calculation of chromium(VI) content. ..5 8.2 Recovery rate (according to 7.5) 6 8.3 Expression of results .6 9 Test report ..6 Annex A (informative) Accuracy Annex B (informative) Chromatographic conditions for direct detection method .9 Annex C (informative) Chromatographic conditions for method with post-column reaction ..12 Annex D (informative) Comparison between the colorimetric method (Is0 17075-1) and the ionic chromatography method (Is0 17075-2) 16 iii nSee=ZHEJIANG INST OF STANDARDIZATION C15956617 ithout license from IHS