ISO/TS TECHNICAL SPECIFICATION 21231 First edition 2019-02 Water quality Characterization of analytical methods Guidelines for the selection of a representative matrix Reference number IS0/TS 21231:2019(E) ISO @ IS0 2019 IS0/TS 21231:2019(E) COPYRIGHTPROTECTEDDOCUMENT @ ISO 2019 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 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122 749 0111 Fax: +41 22 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2019 - All rights reserved IS0/TS 21231:2019(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. .1 2 Normative references ..1 3 Terms and definitions ..1 4 Principle ..4 5 Influence parameters .5 5.1 Common parameters for all matrices. .5 5.2 Water intended for consumption .6 5.3 Natural waters .6 5.4 Wastewaters .6 5.5 Marine waters. .6 5.6 Recreational waters .7 6 Selection of characteristic parameters of a matrix 1 6.1 General 7 6.2 Allwaters 7 6.3 Waters intended for consumption 7 6.4 Natural waters. .7 6.5 Waste waters .7 6.6 Marine waters .8 6.7 Recreational waters .8 7 Available materials .8 7.1 General .8 7.2 Material obtained by reasonable dilution of a real matrix .8 7.3 Artificial material .9 7.4 Analyte-specific blank values in matrices ..9 8 Report .9 Annex A (informative) Characterization of waters intended for human consumption and mineral waters. .10 Annex B (informative) Examples of preparation of artificial matrices and representative characteristics.. .11 Annex C (informative) Occurrence of chemical substances in waste water, by industrial activity sector .23 Annex D (informative) Leachate. .32 Bibliography .33 @ IS0 2019 - All rights reserved iii