ISO-10473-2000.pdf
《ISO-10473-2000.pdf》由会员分享,可在线阅读,更多相关《ISO-10473-2000.pdf(18页珍藏版)》请在三一文库上搜索。
1、Reference number ISO 10473:2000(E) ISO 2000 INTERNATIONAL STANDARD ISO 10473 First edition 2000-04-15 Ambient air Measurement of the mass of particulate matter on a filter medium Beta-ray absorption method Air ambiant Mesurage de la masse des matires particulaires sur un milieu filtrant Mthode par a
2、bsorption de rayons bta Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 04:56:38 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 10473:2000(E) PDF d
3、isclaimer 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 installed on the computer performing the editing. In downloading this file, parti
4、es accept therein the responsibility of not infringing Adobes licensing policy. The ISO 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 t
5、o the file; the PDF-creation parameters were optimized for printing. Every care has been 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. ISO 2000 Al
6、l 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 microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country
7、of the requester. ISO copyright office Case postale 56 ? CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 734 10 79 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO 2000 All rights reserved Copyright International Organization for Standardization Provided by IHS under license
8、with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 04:56:38 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 10473:2000(E) ISO 2000 All rights reservediii ContentsPage Foreword.iv 1Scope 1 2Term and definition .1 3Principle1 3.1Description
9、.1 3.2Limitations2 4Apparatus.3 4.1Apparatus for sequential or simultaneous sampling and analysis3 4.2Apparatus for separate sampling and analysis7 5Calibration of the beta gauge.7 5.1Zero calibration and variability.7 5.2Calibration8 6Procedure.10 6.1Sampling time 10 6.2Automatic apparatus for sequ
10、ential or simultaneous sampling and analysis10 6.3Automatic apparatus for separate sampling and analysis10 7Expression of results 11 8Test report11 Bibliography12 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/99725
11、45001 Not for Resale, 04/20/2007 04:56:38 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 10473:2000(E) iv ISO 2000 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member b
12、odies). 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 a
13、nd 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 3. 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 casting a vote. Attention is drawn to the possibility that some of the elements
15、 of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 10473 was prepared by Technical Committee ISO/TC 146,Air quality, Subcommittee SC 3,Ambient atmospheres. Copyright Internat
16、ional Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 04:56:38 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARDISO 10473:2000(E) ISO 2000 All rights reser
17、ved1 Ambient air Measurement of the mass of particulate matter on a filter medium Beta-ray absorption method 1Scope This International Standard describes a method for the measurement of the mass of particulate matter in ambient air and is based on the absorption of beta rays by the particulate matte
18、r. This method applies to the determination of concentrations ranging from a few micrograms per cubic metre to a few milligrams per cubic metre contained in the atmospheres of urban, rural or industrial areas. The lower mass detection limit of the method is usually 15 g to 30 g of deposited mass per
19、 square centimetre of surface area, S, of the filter. This means, for a sampling time t of 3 h and a flowrate q of 1 m3/h, that the concentration detection limit ranges between 5 g/m3and 10 g/m3, computed as follows: Concentrationg / cm (cm (m/h) (h) 2 2 3 ?ej? S q t )1 Sampling techniques are not i
20、ncluded in the scope of this International Standard. NOTEThe concentration of particulate matter is calculated by dividing the mass deposited on a filter tape or individual filter, by the known volume of air sampled. However, concentration is dependent on the sampling technique used, for example, th
21、e design of the sampling inlet. Normally, for ambient-air particle sampling, large particles are filtered out by means of a size- selective inlet (for example cascade impactor or cyclone filtration). The particle size limit is defined by the characteristics of the sampling head. 2Term and definition
22、 For the purposes of this International Standard, the following term and definition applies. 2.1 beta ray radiation emitted by electrons during the nuclear decay of radioactive elements NOTEIn this International Standard, elements such as147Pm,14C or85Kr may be used. 3Principle 3.1Description A know
23、n volume of ambient air is drawn through a filter on which the particulate matter is collected. The total mass of the particulate matter is determined by the measurement of absorption of beta rays. This measurement follows the following empirical absorption law: N = No?e?km(1) Copyright Internationa
24、l Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 04:56:38 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 10473:2000(E) 2 ISO 2000 All rights reserved where Nois the numbe
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ISO 10473 2000
链接地址:https://www.31doc.com/p-3773795.html