ISO INTERNATIONAL STANDARD 22033 Second edition 2011-09-01 Nickel alloys Determination of niobium lInductively coupled plasmal atomic emission spectrometric method Alliages de nickel - Dosage du niobium - Methode par spectrométrie d'émission atomique a plasma induit par haute frequence Reference number ISO 22033:2011(E) ISO ISO2011 HS under I n or networking permitted without license from IHS Not for Resale ISO 22033:2011(E) COPYRiGHTPROTECTEDDOCUMENT ISO2011 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 either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office 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 @ ISO 2011 - All rights reserved Not for Resale ISO 22033:2011(E) Contents Page Foreword .iv 1 Scope 2 Normative reference 3 Principle. 4 Reagents 2 5 Apparatus 6 Sampling and sample preparation. 3 7 Procedure 7.1 Testportion 7.2 Preparation of test solution, Tnb 7.3 Optimization of spectrometer 7.4 Predetermination of the test solution .. 5 7.5 Preparation of calibration solutions for bracketing, Ki,Nb and Kh,Nb 7.6 Measurement of test solutions.... 8 Expression of results 6 8.1 Method of calculation 8.2 Precision. 8.3 Trueness 6 9 Test report. Annex A (normative) Checking the performance of an IcP instrument.. Annex B (informative) Suggested analytical lines and possible interferences in the determination of niobium byICP/AES 10 Annex C (informative) Notes on the test programme 11 ili thout license from IHS Not for Resale