ISO INTERNATIONAL STANDARD 18772 First edition 2008-02-15 Soil quality Guidance on leaching procedures for subsequent chemical and ecotoxicological testing of soils and soil materials Qualite du sol- Lignes directrices relatives aux modes opératoires de lixiviation en vue d'essais chimiques et écotoxicologiques ulterieurs des sols et matériaux du sol Reference number ISO 18772:2008(E) @ ISO 2008 THS unde sefrom IHS Not for Resale ISO 18772:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHTPROTECTED DOCUMENT @ ISO2008 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 memberbody in the country of the requester. ISO copyright office Case postale 56. CH-1211Geneva 20 Tel. + 4122 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISo 2008 - All rights reserved I without license from IHS Not for Resale ISO 18772:2008(E) Contents Page Foreword. Introduction 1 Scope 2 Normative references 3 Terms and definitions 4 General approach . 4.1 Aim of leaching tests 4.2 How to choose leaching tests 4.3 Usefulness of leaching tests to understand and characterise different mechanisms occurring in soil... 5 Case 1: Application of leaching tests to determine the leaching behaviour of soil in the framework of impact assessment... 5.1 Presentation and description of the assessment methodology. 8 6 Case 2: Compliance and comparison purposes . L Descriptionoftestmethods... 7.1 Laboratory methods for basic characterisation and compliance/quality control testing ....14 7.2 Large-scale columns and lysimeter.. .25 8 Example: how to use leaching test results to assess the impact of soil on groundwater ....26 8.1 General... ..26 8.2 Use of leaching behaviour determination in subsequent transfer and impact assessment ....27 Annex A (informative) Schematic representation of a contaminated site with relevant targets.. ..28 Annex B (informative) Comparison at different scales of testing (laboratory, lysimeter and field scale).... .29 Bibliography. ili from IHS Not for Resa ISO 18772:2008(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies technical committees. Each member body interested in a subject for which a technical committee has been InternationalElectrotechnicalCommission(iEC)onallmattersofelectrotechnicalstandardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 18772 was prepared by Technical Committee ISO/TC 190, Soil quality, Subcommit