ISO/TR TECHNICAL REPORT 18818 First edition 2017-06 Cosmetics Analytical method Detection and quantitative determination of Diethanolamine (DEA) by GC/MS de ladiéthanolamine (DEA) parCG/SM Referencenumber ISO/TR18818:2017(E) Intemational Organization for Standardization ZHEJIANG INST OF STANDARDIZATION C1 5956617 @IS02017 IS0/TR18818:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS02017,Published in Switzerland 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 Ch. de Blandonnet 8.CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +4122 749 09 47 copyright@iso.org www.iso.org Uicensee-ZHEJIANG INSTOF STANDARDIZRoISQl.7 -All rights reserved etworking permitted without license from IHS Not for Resale, 2017/9/11 05:55:1 IS0/TR18818:2017(E) Contents Page Foreword ..iv Introduction.. 1 Scope.. 2 Normativereferences 3 Termsand definitions 4 Principle .1 5 Procedure 2 5.1 Preparation of calibration solutions. 2 5.1.1 Stocksolution .2 5.1.2 Standard solution 2 5.1.3 Calibration solutions .2 5.2 Sample preparation.. 2 5.3 Analysis. 2 5.3.1 General 2 5.3.2 Exampleofinstrumentalconditions .3 5.3.3 Recovery. 3 5.3.4 Calibration curve .3 5.4 Determination 4 6 Limitofquantification ..4 AnnexA(informative)ExamplesoftypicalGc-MSchromatogramofstandardDEA .5 Bibliography .7 ntemational oganzation@sS2017 -All rights reserved iii See=ZHEJIANG INSTOFSTANDARDIZATIONC15956617 vithout license from IHS