ISO INTERNATIONAL STANDARD 17378-2 First edition 2014-02-01 Water quality Determination of arsenic and antimony - Part 2: Method using hydride generation atomic absorption spectrometry (HG. AAS) Qualité de I'eau - Dosage de I'arsenic et de I'antimoine - Partie 2: Methode par spectromeétrie d'absorption atomique a géneration d'hydrures (HG-AAS) Reference number IS0 17378-2:2014(E) LSO @ IS0 2014 I without license from IHS Not for Resale IS0 17378-2:2014(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. 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 @ IS0 2014 - All rights reserved No reproductic networking permited without license from IHS Not for Resale IS0 17378-2:2014(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Principle .2 3.1 Arsenic 2 3.2 Antimony .2 4 Interferences .2 4.1 General 2 4.2 Arsenic, .3 4.3 Antimony. .3 5 Reagents .3 5.1 General requirements .3 6 Apparatus .8 7 Sampling and sample preparation 7.1 Sampling technique .9 7.2 Pre-reduction .9 8 Instrumental set up ..10 9 Procedure. .10 9.1 General requirements .10 9.2 Analysis using the method of standard calibration 11 9.3 Analysis using the standard addition method of calibration .11 10 Calibration and data analysis .12 10.1 General requirements 12 10.2 Calculation using the calibration curve .12 10.3 Calculation using the standard addition method. ..13 11 Expression of results .13 12 Test report ..13 Annex A (informative) Additional information ..14 Annex B (informative) Schematic flow diagram and signal response ..15 Annex C (informative) Example of enrichment technique ..17 Annex D (informative) Performance data ..19 Bibliography .22 iii Stal se with IS Not for Resale