ISO INTERNATIONAL STANDARD 11437 First edition 2018-01 Nickel alloys - Determination of lead - Electrothermal atomic absorption spectrometric method Alliages de nickel -Détermination duplomb - Méthode par spectrométrie d'absorption atomique électrothermique Reference number IS0 11437:2018(E) so @ IS0 2018 IS0 11437:2018(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2018 All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 CP 40i: Ch. de Blandonnet 8 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Published in Switzerland ii @ IS0 2018 - All rights reserved IS0 11437:2018(E) Contents Page Foreword ..iv 1 Scope 2 Normative references .1 3 Terms and definitions 4 Principle 5 Reagents. .1 6 Apparatus .2 7 Instrument criteria .3 7.1 Preparation of solutions required for testing criteria .3 7.2 Characteristic mass .3 7.3 Minimum precision .3 7.4 Limit ofdetection. .3 7.5 Linearity. 4 8 Sampling and sample preparation .4 9 Procedure .4 9.1 Preparation of the test solution 4 9.2 Blanktest. .4 9.3 Preparation of the calibration solutions ..4 9.4 Calibration and determination. 4 9.4.1 Adjustment of the atomic absorption spectrometer .4 9.4.2 Atomic absorption measurements .5 9.5 Number of determinations .5 10 Expression of results .6 10.1 Calculation .6 10.2 Precision. .. 6 10.2.1 Interlaboratory tests .6 10.2.2 Precision data ..6 11 Test report ..7 Annex A (normative) Optimization and checking of spectrometer performance criteria ..8 Bibliography .15 @ IS0 2018 - All rights reserved iii