ISO INTERNATIONAL STANDARD 23166 First edition 2018-12 Nickel alloys Determination of tantalum Inductively coupled plasma optical emission spectrometric method Alliagesdenickel-DéterminationdutantaleMéthodepar spectrométrie d'émissionoptique avec sourcea plasma induitpar hautefréquence Reference number IS0 23166:2018(E) ISO @ IS0 2018 IS0 23166:2018(E) COPYRIGHTPROTECTEDDOCUMENT IS02018 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 below or Iso's member body in the country of the requester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone:+4122749 0111 Fax: +41 22 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2018 - All rights reserved IS0 23166:2018(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references 3 Terms and definitions 4 Principle ..2 5 Reagents. 6 Apparatus .3 7 Samplingandsamplepreparation .3 8 ..4 Procedure 8.1 Testportion. .4 Preparation of test solution, TTA 8.2 4 8.3 Optimization ofthespectrometer .4 8.4 .5 Pre-determinationofthetestsolution 8.5 Preparation ofcalibration solutions for bracketing,Ki,Ta and Kh,Ta .5 8.6 Measurement of test solutions. .6 9 Expressionofresults .6 9.1 Method of calculation. .6 9.2 Precision. ..6 9.2.1 Laboratory tests .6 9.2.2 Wavelength for measurement .6 9.2.3 Statisticalevaluation 6 9.3 Trueness .7 10 Test report .7 Annex A (normative)Checking theperformanceofan inductively coupled plasma optical .8 emissionspectrometer AnnexB (informative) Notes onthetestprogramme .10 Bibliography .11 IS0 2018-All rights reserved ili