ISO INTERNATIONAL STANDARD 22258 First edition 2020-07 Traditional Chinese medicine Determination of pesticide residues in natural products by gas chromatography Medecinetraditionnellechinoise-Déterminationdesrésidus de pesticides dans les produits naturels par chromatographie en phase gazeuse Reference number IS0 22258:2020(E) ISO ISO2020 IS0 22258:2020(E) COPYRIGHTPROTECTEDDOCUMENT @IS02020 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 below or Iso's memberbody in the country ofthe requester. ISO copyright office CP 40i : Ch.de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22.749 01 11 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii @ IS0 2020 - All rights reserved IS022258:2020(E) Contents Page Foreword .iv Introduction ..V 1 Scope. ..1 2 Normativereferences ..1 3 Terms and definitions ..1 4 Sampling ..1 5 Determination of pesticide residues .2 5.1 Reagents .2 5.1.1 General. 2 5.1.2 Check for purity of reagents .2 5.2 .2 Apparatus 5.3 Qualitativeandquantitativeanalysisofpesticideresidues 2 5.4 Test .3 6 Limits .3 AnnexA (informative)Determination ofpesticideresidues in naturalproducts used in TCM by GC AnnexB (informative)Maximum limits ofpesticideresidue in natural products used in TCM (based on the European Pharmacopoeia and Us Pharmacopoeia). Annex C (informative)Recommended limits ofpesticideresidues in driedfruit,vegetable orherbalmedicinefromWHOandFDA/EPA .10 Bibliography 13 IS0 2020-All rights reserved ili