ISO INTERNATIONAL STANDARD 16558-1 First edition 2015-08-15 Soil quality Risk-based petroleum hydrocarbons - Part 1: Determination of aliphatic and aromatic fractions of volatile petroleum hydrocarbons using gas chromatography (static headspace method) Qualité du sol - Hydrocarbures de pétrole a risque - Partie 1: Détermination des fractions aliphatiques et aromatiques des hydrocarbures de pétrole volatiles par chromatographie en phase gazeuse (méthode par espace de téte statique) Reference number ISO 16558-1:2015(E) ISO International Organization for Standardization @ IS0 2015 ed without license from IHS IS0 16558-1:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2015, 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 copyright office 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 HS und Not for Resale, 2015/11/11 08:41:09 networking permited without license from IHS IS0 16558-1:2015(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Terms and definitions ..2 4 Interferences ..3 5 Principle. .3 6 Reagents ..3 7 Apparatus ..7 8 Sampling, preservation, and sample pretreatment ..8 8.1 General ..8 8.2 Sampling using vials pre-filled with methanol .8 8.3 Sampling using coring tube method. ..9 9 Procedure .9 9.1 Blank determination .9 9.2 Extraction. .9 9.3 Headspace-analysis. .9 9.4 Gas chromatographic analysis 10 9.4.1 General. 10 9.4.2 Calibration 10 9.4.3 Measurement .12 10 Calculation .12 10.1 Calculation of the concentration in the spiked water sample. .12 10.1.1 Volatile aromatic hydrocarbon compounds with internal standard method .12 10.1.2 Volatile aliphatic fractions 12 10.2 Calculation of the concentration of a volatile compound or fraction in the soil sample.... 13 10.3 Calculation of the concentration of volatile oil in the soil sample. .13 11 Expression of results .13 12 Precision ..13 13 Test report ..13 Annex A (informative) Examples of GC-MS chromatograms of fuels ..14 Bibliography .16 ii icensee=Zhejiang Institute of Standardization 5956617 vithout license from IHS Not for Resale, 2015/11/11 08:41:09