1、BSI Standards PublicationBS ISO 20773:2013Cigarettes Determinationof nicotine-free dry particulatematter and nicotine insidestream smoke Methodusing a routine analytical linearsmoking machine equippedwith a fishtail chimneyBS ISO 20773:2013 BRITISH STANDARDNational forewordThis British Standard is t
2、he UK implementation of ISO 20773:2013. Itsupersedes BS ISO 20773:2007 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee AW/40, Tobacco and tobacco products.A list of organizations represented on this committee can beobtained on request to its secretary.T
3、his publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 74580 5ICS 65.160Compliance with a British Standard cannot confer immu
4、nity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 September 2013.Amendments issued since publicationDate Text affectedBS ISO 20773:2013 ISO 2013Cigarettes Determination of nicotine-free dry particulate matter and ni
5、cotine in sidestream smoke Method using a routine analytical linear smoking machine equipped with a fishtail chimneyCigarettes Dtermination de la matire particulaire anhydre et exempte de nicotine et de la nicotine dans le courant secondaire de fume Mthode utilisant une machine fumer analytique de r
6、outine linaire quipe dune chemine individuelle en forme de queue de poissonINTERNATIONAL STANDARDISO20773Second edition2013-09-15Reference numberISO 20773:2013(E)BS ISO 20773:2013ISO 20773:2013(E)ii ISO 2013 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2013All rights reserved. Unless otherwis
7、e 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 belo
8、w or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 20773:2013ISO 20773:2013(E) ISO 2013 All rights reserved iiiContents PageForeword
9、 vIntroduction vi1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 35 Apparatus . 36 Reagents 67 Sampling and preparation of cigarettes . 77.1 General . 77.2 Symbols . 77.3 Preparation of the cigarettes for smoking . 87.4 Selection of test portions of cigarettes . 87.5 Markin
10、g the butt length . 97.6 Conditioning 97.7 Preliminary tests before smoking . 108 Preparation for the smoking run .108.1 Smoking plan . 108.2 Preparation of mainstream and sidestream smoke traps and cigarette holders .108.3 Setting up the smoking machine 108.4 Assembly of fishtail chimney, sidestrea
11、m smoke trap and impinger trap 109 Procedure for smoking run and collection of sidestream smoke 119.1 Preparation of fishtail chimney . 119.2 Preparation of impinger trap . 119.3 Setting the fishtail chimney flow rate . 119.4 Connection of sidestream smoke filter pad holders 119.5 Record the atmosph
12、eric conditions . 119.6 Loading the cigarettes 119.7 Smoking the cigarettes 1210 Determination of total particulate matter 1210.1 Total sidestream smoke particulate matter retained on filter pads 1210.2 Calculation of total sidestream smoke particulate matter retained on filter pads .1310.3 Treatmen
13、t of total sidestream smoke particulate matter retained on filter pads .1310.4 Extraction of sidestream smoke particulate matter from the fishtail chimney .1310.5 Estimation of sidestream smoke particulate matter in the fishtail chimney .1411 Determination of sidestream smoke nicotine 1511.1 Determi
14、nation of nicotine in the sidestream smoke filter pad, Np1511.2 Determination of nicotine in the fishtail chimney extract, Nc1511.3 Determination of nicotine in the impinger trap, Ni.1511.4 Calculation of total sidestream smoke nicotine, N 1512 Determination of nicotine-free dry sidestream smoke par
15、ticulate matter .1612.1 Determination of nicotine-free dry sidestream smoke particulate matter on the filter pad 1612.2 Determination of total nicotine-free dry sidestream smoke particulate matter 1613 Test report 1613.1 General 1613.2 Characteristic data about the cigarette .1613.3 Data about sampl
16、ing . 1713.4 Description of test . 17BS ISO 20773:2013ISO 20773:2013(E)iv ISO 2013 All rights reserved13.5 Test results. 1714 Repeatability and reproducibility .18Annex A (informative) Smoking plans .19Annex B (informative) Typical dilution factors for estimation of chimney particulate matter .23Bib
17、liography .24BS ISO 20773:2013ISO 20773:2013(E)ForewordISO (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 mem
18、ber 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 and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International El
19、ectrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types
20、 of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2. www.iso.org/directivesAttention 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 res
21、ponsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received. www.iso.org/patentsAny trade name used in this document is information given for
22、the convenience of users and does not constitute an endorsement.The committee responsible for this document is ISO/TC 126, Tobacco and tobacco products.This second edition cancels and replaces the first edition (ISO 20773:2007), which has been editorially revised. ISO 2013 All rights reserved vBS IS
23、O 20773:2013ISO 20773:2013(E)IntroductionCigarettes are manufactured to close tolerances using strict quality control procedures.However, the main constituents involved in the manufacture are derived from natural products (such as tobacco and paper) and this results in a final product which is intri
24、nsically variable. Further complexity arises as the cigarette is converted to cigarette smoke during smoking.The quantitative measurement of nicotine, of particulate matter and of nicotine-free dry particulate matter (NFDPM, sometimes referred to as “tar”) is therefore dependent on the arbitrary def
25、inition of the means used to generate and collect the smoke. In particular, the ambient conditions (e.g. temperature, humidity, air movement within the laboratory) under which the test pieces are conditioned and smoke is collected play a critical role in the accuracy of the measurement.Sidestream sm
26、oke in this International Standard is understood to be the smoke that is evolved from the cigarette during the smoking run other than from the mouth end (which is called mainstream smoke).NOTE Sidestream smoke is distinguished from environmental tobacco smoke (ETS), which is a mixture of aged and di
27、luted exhaled mainstream smoke and aged and diluted sidestream smoke, and for the assessment of which the present method does not apply.From the time that scientists first attempted to determine nicotine and total and dry particulate matter yields in sidestream smoke, many different methods have bee
28、n adopted. However, experience has shown some procedures to be more reliable and more amenable to handling of large numbers of samples. With these factors in mind, during the 19992002 period, collaborative studies by a task force composed of CORESTA (www.coresta.org) members have shown that improvem
29、ents in repeatability and reproducibility result when some restrictions are placed upon the wide variety of methods and practices described in existing methods.This International Standard, produced after much collaborative experimentation by many laboratories in many countries, reflects the results
30、of the optimization proposed and validated by the task force and provides one set of procedures that are the accepted reference procedures and for which repeatability and reproducibility of the determinations were assessed. Experience in the task force has shown how strict adherence to the detailed
31、set up and conditions of the method, as well as the degree of proficiency of the operator, affect the precision of the results.Further, it is preferable that the selected method be compatible with different modes of cigarette equilibration or puffing parameters for the smoking of the tested pieces.
32、The ISO standards for the determination of mainstream smoke yields were, however, followed to the largest possible extent, although the machines used by the different laboratories were all of a linear type.This method is a machine method and it allows cigarettes to be smoked using a strictly control
33、led set of parameters. Thus it enables the sidestream smoke NFDPM and nicotine from cigarettes, when smoked by this procedure, to be compared and ranked. In the course of its studies, the task force demonstrated the value of comparing the analytical processes and their stability by use of the COREST
34、A monitor test piece for determining NFDPM and nicotine yields.Since the determinations of NFDPM and nicotine in sidestream smoke are by nature more complex and delicate than their counterparts performed on mainstream smoke, it is highly recommended to include a monitor test piece in the smoking pla
35、ns, as is done in mainstream smoke determinations. It is possible to use the CORESTA monitor or any other internally designed monitor test piece for this purpose. The use of an internationally recognized one is recommended.vi ISO 2013 All rights reservedBS ISO 20773:2013Cigarettes Determination of n
36、icotine-free dry particulate matter and nicotine in sidestream smoke Method using a routine analytical linear smoking machine equipped with a fishtail chimneyWARNING The use of this International Standard can involve hazardous materials, operations and equipment. This International Standard does not
37、 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 safety and health practices and determine the applicability of regulatory limitations prior to use.1 ScopeThis International Standard is a
38、pplicable to the determination of total particulate matter and to the subsequent determination of nicotine and nicotine-free dry particulate matter present in the sidestream smoke from cigarettes. The described method is specified using the ISO 3308 smoking parameters (puff volume, duration and freq
39、uency) and butt length, but it is technically compatible with other smoking regimes.NOTE The method may not be directly adaptable to other sidestream smoke analytes.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable f
40、or its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 2971, Cigarettes and filter rods Determination of nominal diameter Method using a non-contact optical measuring appar
41、atusISO 3308, Routine analytical cigarette-smoking machine Definitions and standard conditionsISO 3402, Tobacco and tobacco products Atmosphere for conditioning and testingISO 4387, Cigarettes Determination of total and nicotine-free dry particulate matter using a routine analytical smoking machineI
42、SO 6488, Tobacco and tobacco products Determination of water content Karl Fischer methodISO 6565, Tobacco and tobacco products Draw resistance of cigarettes and pressure drop of filter rods Standard conditions and measurementISO 10315, Cigarettes Determination of nicotine in smoke condensates Gas-ch
43、romatographic methodISO 10362-1, Cigarettes Determination of water in smoke condensates Part 1: Gas-chromatographic method3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.INTERNATIONAL STANDARD ISO 20773:2013(E) ISO 2013 All rights reserved 1BS ISO
44、20773:2013ISO 20773:2013(E)3.1total sidestream smoke particulate mattercrude sidestream smoke condensateportion of the sidestream smoke which is trapped on the sidestream smoke filter pad, together with that portion of the sidestream smoke which condenses on the wall of the fishtail chimneyNote 1 to
45、 entry: Expressed as milligrams per cigarette.3.2dry sidestream smoke particulate matterdry sidestream smoke condensatedry sidestream smoke particulate matter composed of the sum of the total particulate matter trapped on the sidestream smoke filter pad after deduction of its water content, plus the
46、 estimated nicotine-free dry particulate matter condensed on the walls of the sidestream smoke chimney (this estimate being obtained by a UV absorption method described below), plus the nicotine condensed on the walls of the sidestream smoke chimneyNote 1 to entry: Expressed as milligrams per cigare
47、tte.3.3nicotine-free dry sidestream smoke particulate matternicotine-free dry sidestream smoke condensatedry sidestream smoke particulate matter, after deduction of its nicotine contentNote 1 to entry: Expressed as milligrams per cigarette.3.4sidestream smoke nicotinesum of the nicotine condensed on
48、 the walls of the fishtail chimney, the nicotine collected on the sidestream smoke filter pad and the nicotine collected in the impinger trapNote 1 to entry: Expressed as milligrams per cigarette.3.5smoking processuse of a smoking machine to smoke cigarettes from lighting to final puff3.6smoking run
49、specific smoking process to produce such sidestream smoke from a sample of cigarettes as is necessary for the determination of the smoke components3.7laboratory samplesample intended for laboratory inspection or testing and which is representative of the gross sample or the sub-period sample3.8test samplecigarettes for test taken at random from the laboratory sample and which are representative of each of the increments making up the laboratory sample3.9conditioning samplecigarettes selected from the test sampl
