ISO INTERNATIONAL STANDARD 17943 Firstedition 2016-04-01 Water quality - Determination of volatile organic compounds in water - Method using headspace solid- phase micro-extraction (HS-SPME) followed by gas chromatography-mass spectrometry (GC-MS) Qualite de I'eau - Détermination de composés organiques volatils dans I'eau Méthode utilisant une micro-extraction en phase solide (MEPS) de I'espace de tete suivie d'une chromatographie en phase gazeuse-spectrométrie de masse (CG-SM) Reference number IS0 17943:2016(E) ISO International Organization for Standardization @ IS0 2016 TANDARDIZATION C1 5956617 without license from IHS IS0 17943:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2016, Published in Switzerland All rights reserved. Unless otherwise specified, 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 copyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org Internatinair PrganizationforStandardization ensee-ZHEJIANG INST.OF STANDARDIzARoISQ16- All rights reserved etworking permitted without license from IHS IS0 17943:2016(E) Contents Page Foreword ..iv Introduction. 1 Scope. .1 2 Normative references 3 Principle .3 4 Interferences ..4 4.1 Sampling. .4 4.2 Extraction ..4 4.3 Gas chromatography and mass spectrometry ..5 5 Reagents .5 6 Apparatus. > 7 Sampling and sample pretreatment ..8 8 Procedure. ..8 8.1 Sample preparation and extraction .8 8.2 Gas chromatography .9 8.3 Identification of individual compounds by means of mass spectrometry (GC-MS) ..9 8.4 Blankvaluemeasurements .11 9 Calibration .11 9.1 General .11 9.2 Calibration of the total procedure using the internal standard. ..12 10 Calculation of the results ..13 11 Expression of results ..13 12 Test report ..14 Annex A (informative) Examples of suitable SPME fibres ..15 Annex B (informative) Examples of GC columns ..16 Annex C (informative) Examples of internal standards .17 Annex D (informative) Suitable gas chromatographic conditions and example chromatograms for compounds of Table 1 .19 Annex E (informative) General information on SPME ..33 Annex F (informative) Performance data .34 Bibliography .43 iii HEJIANG INST OF STANDARDIZATION C1 5956617 thout license from IHS