BS ISO 20370-2009 Material used for producing wrappings for cigarette filters cigarettes and other tobacco products - Determination of acetate content《卷烟滤咀、卷烟以及其它烟草制品生产用包装材料 乙酸含量的测.pdf
《BS ISO 20370-2009 Material used for producing wrappings for cigarette filters cigarettes and other tobacco products - Determination of acetate content《卷烟滤咀、卷烟以及其它烟草制品生产用包装材料 乙酸含量的测.pdf》由会员分享,可在线阅读,更多相关《BS ISO 20370-2009 Material used for producing wrappings for cigarette filters cigarettes and other tobacco products - Determination of acetate content《卷烟滤咀、卷烟以及其它烟草制品生产用包装材料 乙酸含量的测.pdf(16页珍藏版)》请在麦多课文档分享上搜索。
1、BS ISO20370:2009ICS 65.160NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDMaterial used forproducing wrappingsfor cigarette filters,cigarettes and othertobacco products Determination ofacetate contentThis British Standardwas published under theauthority of the S
2、tandardsPolicy and StrategyCommittee on 31 October2009 BSI 2009ISBN 978 0 580 63202 0Amendments/corrigenda issued since publicationDate CommentsBS ISO 20370:2009National forewordThis British Standard is the UK implementation of ISO 20370:2009.The UK participation in its preparation was entrusted to
3、TechnicalCommittee AW/40, Tobacco and tobacco products.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance
4、 with a British Standard cannot confer immunityfrom legal obligations.BS ISO 20370:2009Reference numberISO 20370:2009(E)ISO 2009INTERNATIONAL STANDARD ISO20370First edition2009-10-01Material used for producing wrappings for cigarette filters, cigarettes and other tobacco products Determination of ac
5、etate content Matriaux utiliss pour la fabrication des enveloppes pour les filtres de cigarette, pour les cigarettes et pour les autres produits du tabac Dosage de lactate BS ISO 20370:2009ISO 20370:2009(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licens
6、ing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO
7、Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been
8、 taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2009 All rights reserved. Unless otherwise specified, no part of t
9、his 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 either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1
10、211 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 2009 All rights reservedBS ISO 20370:2009ISO 20370:2009(E) ISO 2009 All rights reserved iiiForeword ISO (the International Organization for Standardization) is a worldwi
11、de 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 tha
12、t committee. International organizations, governmental 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. International Standards are drafted in a
13、ccordance with the rules given in the ISO/IEC Directives, 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 re
14、quires approval by at least 75 % of the member bodies casting 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 20370 was prepared by Techn
15、ical Committee ISO/TC 126, Tobacco and tobacco products. BS ISO 20370:2009BS ISO 20370:2009INTERNATIONAL STANDARD ISO 20370:2009(E) ISO 2009 All rights reserved 1Material used for producing wrappings for cigarette filters, cigarettes and other tobacco products Determination of acetate content WARNIN
16、G The use of this International Standard can involve hazardous materials, operations and equipment. This International Standard does not purport to address all the safety problems associated with its use. It is the responsibility of the user of this International Standard to establish appropriate sa
17、fety and health practices and determine the applicability of regulatory limitations prior to use. 1 Scope This International Standard specifies a method for the determination of the acetate content of material used to produce wrappings for cigarette filters, cigarettes and other tobacco products. 2
18、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) applies. ISO 187, Paper, boards and p
19、ulps Standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samples ISO 287, Paper and board Determination of moisture content of a lot Oven-drying method ISO 3696, Water for analytical laboratory use Specification and test methods 3 Terms an
20、d definitions For the purposes of this document, the following terms and definitions apply. 3.1 acetate content materials for producing wrappings for cigarette filters, cigarettes and other tobacco products anhydrous acetic acid content determined by the enzymatic method NOTE Acetate is generally ad
21、ded to wrapping materials, in particular cigarette paper, as sodium acetate and potassium acetate to influence the burning rate of the cigarette and, consequently, the puff number. BS ISO 20370:2009ISO 20370:2009(E) 2 ISO 2009 All rights reserved4 Principle The acetate content is determined by an en
22、zymatic method in which acetate (acetic acid), catalyzed by the enzyme acetyl coenzyme A synthase (ACS) with adenosine 5-triphosphate (ATP) and coenzyme A (CoA), is first converted to acetyl coenzyme A, adenosine 5-monophosphate (AMP) and pyrophosphate in accordance with the following reaction: acet
23、ate + ATP + CoA ACSacetyl-CoA + AMP + pyrophosphate (1) Catalyzed by citrate synthase (CS), acetyl coenzyme A reacts with oxaloacetate to form citrate in accordance with the following reaction: acetyl-CoA + oxaloacetate + H2O CScitrate + CoA (2) The oxaloacetate required for the reaction (2) is form
24、ed from malate and nicotinamide-adenine dinucleotide (NAD+) by catalysis using L-malate dehydrogenase (L-MDH) in accordance with the following reaction: malate + NAD+L-MDH oxaloacetate + H+ NADH (3) The determination is based on the formation of NADH, which is measured by the increase in absorbance
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