ISO/TR TECHNICAL REPORT 21386 First edition 2019-03 Nanotechnologies Considerations for the measurement of nano-objects and their aggregates and agglomerates (NOAA) in environmental matrices Nanotechnologies - Considérations pour la mesure des nano- objets, et leurs agregats et agglomerats (NOAA) dans les matrices environnementales Reference number IS0/TR 21386:2019(E) so IS02019 IS0/TR 21386:2019(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/TR 21386:2019(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. .1 2 Normative references ..1 3 Terms and definitions 4 Symbols and abbreviated terms ..3 5 General considerations. .3 5.1 General .3 5.2 Considerations for determining background levels of NM ..4 5.3 Distributionof NM intheenvironment. .4 5.4 Interaction with materials in environmental matrices. 5.5 Real-time measurements versus integrated versus spot sampling .7 5.6 Preparingsamplesforanalysis ..8 5.7 Characterization and quantitation of NOAA .8 6 Considerations for sampling and analysing NOAA in air ..8 6.1 Generalconsiderations ..8 6.2 Transformations and dispersion in the environment 9 6.3 Sampling considerations. .9 6.4 Preparation for analysis .9 6.5 Detection and quantitation .9 7 Considerations for sampling and analysing NOAA in surface water .10 7.1 General .10 7.2 Transformations and dispersion in the environment .10 7.3 Sampling considerations .10 7.4 Preparation for analysis. .11 7.5 Detection and quantitation .11 7.5.1 Metal NM ..11 7.5.2 Metal oxide NM. .12 7.5.3 Carbon-based NM ..12 8 Considerations for samplingand analysing NOAA in sea water ..12 8.1 Transformations and interaction with materials in the environment. .12 8.2 Sampling considerations. ..12 8.3 Preparation for analysis. ..13 8.4 Detection and quantitation ..13 9 Considerations for sampling and analysing NOAA in sediment ..13 9.1 Transformations and interaction with materials in the environment. ..13 9.2 Sampling considerations ..13 9.3 Preparation for analysis. .14 9.4 Detection and quantitation ..14 10 Considerations for sampling and analysing NOAA in soil. ..14 10.1 Transformations and interaction with materials in the environment. .14 10.2 Sampling considerations ..15 10.3 Preparation for analysis .15 10.4 Detection and quantitation 15 Annex A (informative) Instrumentation/techniques used to quantify and characterize NOAA 1...16.. Bibliography .23 @ IS0 2019 - All rights reserved iii