ISO INTERNATIONAL STANDARD 11652 Firstedition 1997-08-15 Steel and iron -- Determination of cobalt content -- Flame atomic absorption spectrometric method Aciers et fontes - Dosage du cobalt - Methode par spectrometrie d'absorptionatomiquedans la flamme ISO Reference number ISO 11652:1997(E) CopyrightInternational Organization for Standardization No reproduction or networking permitted without license from IHS Not for Resale ISO11652:1997(E) Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards bodies (IsO member bodies). The work of preparing International Standards is normally carried out through Iso technical committees. Each member body interested in a subject for which and non-governmental, in liaison with ISO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard IsO 11652 was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee Sc 1, Methods of determination of chemical composition. Annex A forms an integral part of this International Standard. Annexes B and C arefor informationonly @1SO1997 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case postale 56. CH-1211 Geneve 20. Switzerland Internet [email protected] X.400 C=ch; a=400net; p=iso; 0=isocs; S=central Printed in Switzerland No reproduction or networking permitted without license from IHS Not for Resale ISO 11652:1997(E) INTERNATIONAL STANDARD ISO Steel and iron - Determination of cobalt content - Flame atomic absorption spectrometric method 1 Scope This International Standard specifies a flame atomic absorption spectrometric method for the determination of the cobaltcontentinsteelandiron. The method is applicable to cobalt contents between 0,o03 % (m/m) and 5,0 % (m/m) 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the registers of currently valid International Standards. ISO 385-1:1984, Laboratory glassware Burettes - Part 1: General requirements. IsO 648:1977, Laboratory glassware --- One-mark pipettes. Iso 1042:—1), Laboratory glassware -- One-mark volumetric flasks. Iso 3696:1987, Water for analytical laboratory use -- Specification and test methods. principles and definitions. for the determination of repeatability and reproducibility of a standard measurement method. IsO 5725-3:1994, Accuracy (trueness and precision) of measurement methods and results - Part 3: Intermediate measures of the precision of a standard measurement method. IsO 14284 :1996, Steel and iron -- Sampling and preparation of samples for the determination of chemical composition. 3 Principle Dissolution of a test portion in hydrochloric, nitric and perchloric acids. Spraying of the solution into an air-acetylene flame. Spectrometric measurement of the atomic absorption of the 24o,7 nm spectral line emitted by a cobalt hollow cathode lamp. 1)Tobepublished.(Revisionof ISO1042:1983) Copyright Int Noreproduction ornetworking permited withoutlico Not for Resale