ISO INTERNATIONAL STANDARD 8186 First edition 1989-07-01 Ambient air - Determination of the mass concentration of carbon monoxide -- Gas chromatographic method Air ambiant --- Determination de la concentration en masse du monoxyde de carbone-Methodeparchromatographieenphasegazeuse Reference number ISO 8186 : 1989 (E) Copyright Intermational Organization for Standardization icense with ISC No reproduction or networking permitted without license from IHS Not for Resale ISO8186 :1989 (E) Foreword ISo (the International Organization for Standardization) is a worldwide federation of national standards bodies (IsO member bodies). The work of preparing International Standards is normally carried out through ISo technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with ISO, also take part in the work, Iso collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the Iso Council. They are approved in accordance with ISO procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 8186 was prepared by Technical Committee 1SO/TC 146, Air quality. Annexes A and B form an integral part of this International Standard. Annex C is for information only ?ISO1989 All rights reserved. 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 the publisher. International Organization for Standardization Case postale 56 . CH-1211 Geneve 20 : Switzerland Printed in Switzerland ii etworking permitted without license from IHS Not for Resale ISO8186:1989(E) Introduction This International Standard originated from international demands for air pollution research and control. The method in general can be used for the manual or automatic measurement of car- bon monoxide over a wide range of concentrations found in air samples from a variety of sources. This International Standard, utilizing gas chromatography, is applicable to the measurement of low mass concentrations of carbon monoxide in ambient air and for situations where more accuracy, i.e. 5 % or better of the full scale in the ranges of 0 ii No reproduction or networking permited without license from IHS Not for Resale