ISO INTERNATIONAL STANDARD 23646 First edition 2022-01 Soil quality - Determination of organochlorine pesticides by gas chromatography with mass selective detection (GC-MS) and gas chromatography with electron- capture detection (GC-ECD) Qualité du sol-Détermination des pesticides organochlorés par chromatographie en phase gazeuse avec détection selective demasse (CG-SM) et chromatographie en phase gazeuse avec détection par capture d'électrons (GC-ECD) Reference number IS0 23646:2022(E) ISO @ISO2022 IS0 23646:2022(E) COPYRIGHT PROTECTED DOCUMENT @ISO2022 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, withoutpriorwrittenpermission.Permission can berequestedfrom eitherIso at theaddress below orIso'smemberbodyinthecountryoftherequester. ISO copyright office CP 401 · Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122 749 0111 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2022 - All rights reserved