ISO INTERNATIONAL STANDARD 15366-2 First edition 2014-07-01 Nuclear fuel technology Chemical separation and purification of uranium and plutonium in nitric acid solutions for isotopic and isotopic dilution analysis by solvent extraction chromatography Part 2: Samples containing plutonium and uranium in the nanogram range and below Technologie du combustible nucléaire - Séparation et purification chimiques de I'uranium et du plutonium dans les solutions d'acide nitrique par extraction chromatographique par solvant pour les mesures isotopiques et les analyses par dilution isotopique- Partie 2: Echantillons ayant des teneurs en plutonium et en uranium de I'ordre du nanogramme et inférieures Reference number IS0 15366-2:2014(E) SO @ IS0 2014 se from IHS IS0 15366-2:2014(E) COPYRIGHTPROTECTEDDOCUMENT ISO2014 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. ISOcopyrightoffice 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 Prganizationfor Standardization Not for Resale, 2015/3/11 02:22:47 networking permitted without license from IHS IS0 15366-2:2014(E) Contents Page Foreword ..iv 1 Scope .1 2 Principle of the method. 3 Apparatus 4 Reagents 5 Procedure (see Figure 1) 6 Characteristics ofthe separation ..5 7 Quality control ..5 8 Interferences .6 Annex A (normative) Packing and conditioning of the chromatographic mini-columns as used in the Is0 15366-2 procedure, loaded with an inert polyethylene support coated with tri-n- octyl-phosphine-oxide (TOPO) Bibliography .10 iii vided by IHS underI ithout license from IHS