ISO-24538-2008.pdf
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1、 Reference number ISO 24538:2008(E) ISO 2008 INTERNATIONAL STANDARD ISO 24538 First edition 2008-11-01 Plastics Homopolymer and copolymer resins of vinyl chloride Determination of residual vinyl chloride monomer by gas-chromatographic analysis of dry powder Plastiques Rsines dhomopolymres et de copo
2、lymres de chlorure de vinyle Dosage du chlorure de vinyle rsiduel par chromatographie en phase gazeuse sur poudre sche Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/29/2009 23:41:31 MSTNo reproduction
3、or networking permitted without license from IHS -,-,- ISO 24538:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and ins
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6、 please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2008 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microf
7、ilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 200
8、8 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/29/2009 23:41:31 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 24538:2008(E) ISO 2008 All rights rese
9、rved iii Contents Page Foreword iv 1 Scope . 1 2 Normative references. 1 3 Terms and definitions. 1 4 Principle. 1 5 Apparatus and materials 2 6 Sampling 2 7 Procedure 2 8 Procedure A. 3 8.1 Preparation of test sample and analysis 3 8.2 Calibration . 3 8.3 Calculation. 3 9 Procedure B. 5 9.1 Prepara
10、tion of test sample and analysis 5 9.2 Calibration . 5 9.3 Calculation. 6 10 Precision 7 11 Test report . 7 Annex A (informative) Examples of suitable columns . 8 Bibliography. 9 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/591077
11、0001 Not for Resale, 01/29/2009 23:41:31 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 24538:2008(E) iv ISO 2008 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bo
12、dies). 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, governmental an
13、d 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. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives,
14、 Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies cas
15、ting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 24538 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 5, Ph
16、ysical- chemical properties. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/29/2009 23:41:31 MSTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 24538:20
17、08(E) ISO 2008 All rights reserved 1 Plastics Homopolymer and copolymer resins of vinyl chloride Determination of residual vinyl chloride monomer by gas-chromatographic analysis of dry powder SAFETY STATEMENT Persons using this document should be familiar with normal laboratory practice, if applicab
18、le. This document does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any regulatory requirements. 1 Scope This International Standard specifie
19、s a method for the determination of residual vinyl chloride monomer in homopolymer and copolymer resins of vinyl chloride. The method is based on a static headspace gas-chromatographic technique (i.e. the analysis of the vapour phase in equilibrium with the solid phase at constant temperature) and i
20、s suitable for all kinds of homopolymer and copolymer resin. It is done directly on the resin in powder form. For compounded material, granulate, extrudate, films, etc., use ISO 6401. NOTE In the case of compounded material, it is necessary to dissolve the sample in a suitable solvent in order to re
21、ach complete headspace equilibrium. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments)
22、 applies. ISO 472, Plastics Vocabulary 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 472 apply. 4 Principle A weighed amount of the sample is sealed into a glass vial. After thermal conditioning for a certain period of time to permit the vinyl chlo
23、ride monomer (VCM) to equilibrate between the powder and the vapour phase, a gas sample is taken from the headspace, e.g. by automatic injection, into the gas chromatograph. The components are separated on a column and detected using a flame-ionization detector. Copyright International Organization
24、for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/29/2009 23:41:31 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 24538:2008(E) 2 ISO 2008 All rights reserved 5 Apparatus and materials 5.1 Gas chromatograph, fit
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