ISO-11338-2-2003.pdf
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1、 Reference number ISO 11338-2:2003(E) ISO 2003 INTERNATIONAL STANDARD ISO 11338-2 First edition 2003-06-01 Stationary source emissions Determination of gas and particle-phase polycyclic aromatic hydrocarbons Part 2: Sample preparation, clean-up and determination missions de sources fixes Dterminatio
2、n des hydrocarbures aromatiques polycycliques sous forme gazeuse et particulaire Partie 2: Prparation des chantillons, purification et dtermination Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007
3、 10:05:19 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 11338-2:2003(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 e
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6、roblem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2003 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 micr
7、ofilm, 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 2
8、003 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 10:05:19 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 11338-2:2003(E) ISO 2003 All rights
9、reserved iii Contents Page Forewordiv Introduction v 1 Scope1 2 Normative references .1 3 Terms and definitions.1 4 Principle.2 4.1 Sampling2 4.2 Analysis2 5 Safety measures2 6 Procedures 2 6.1 HPLC method 2 6.2 GC-MS method 9 7 Limitations and interferences16 7.1 Limitations.16 7.2 Interferences17
10、Annex A (informative) Maximum UV absorption wavelength and recommended combinations of excitation-emission wavelengths for HPLC.18 Annex B (informative) Formulae and physical properties of selected PAH.19 Annex C (informative) Characteristic ions for GC-MS detection of selected PAH, recovery, and su
11、rrogate recovery standards20 Annex D (informative) Applicability of internal standards for GC-MS detection of selected PAH.21 Annex E (normative) Summary of performance characteristics of the HPLC method .22 Bibliography .23 Copyright International Organization for Standardization Provided by IHS un
12、der license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 10:05:19 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 11338-2:2003(E) iv ISO 2003 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federa
13、tion 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 committ
14、ee. 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 accordance
15、 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 requires ap
16、proval 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 11338-2 was prepared by Technical Co
17、mmittee ISO/TC 146, Air quality, Subcommittee SC 1, Stationary source emissions. ISO 11338 consists of the following parts, under the general title Stationary source emissions Determination of gas and particle-phase polycyclic aromatic hydrocarbons: Part 1: Sampling Part 2: Sample preparation, clean
18、-up and determination Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 10:05:19 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 11338-2:2003(E) ISO 2003 All rights re
19、served v Introduction This part of ISO 11338 describes procedures for sample preparation, clean-up and analysis of polycyclic aromatic hydrocarbons (PAHs) (collected from stack and waste gases), based on either high performance liquid chromatography (HPLC) (see Annexes A and E) or gas chromatography
20、-mass spectrometry (GC-MS) (see Annexes B, C and D). PAHs are emitted to the atmosphere primarily by the combustion of fossil fuels and wood. PAHs are considered to be an important class of environmental carcinogens. The identification and quantification of PAHs emitted from stationary sources repre
21、sent a critical aspect in the assessment of air quality. Stack and waste gases emitted from stationary sources often contain solid particles. Because of the range of their vapour pressures, PAHs are distributed between gas and particle phases. In the atmosphere, PAHs containing four or more rings te
22、nd to adsorb onto particles, while PAHs containing two to four rings tend to be present in gaseous form. However in stack and waste gases, the distribution of PAHs between gas and particle phases depends on the temperature, the mass of emitted particles, particle size, humidity, type and concentrati
23、on of PAH. During sampling, sample storage and preparation of the sample, losses of PAH can occur and prevent quantitative analysis. These losses can be the result of the volatility of two- and three-ring PAHs, the physical- chemical instability of PAHs in the presence of light, O3, NOx, SO2, HCl an
24、d certain heavy metals. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 10:05:19 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for
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