ISO 17736-2010 Workplace air quality - Determination of isocyanate in air using a double-filter sampling device and analysis by high pressure liquid chromatogra.pdf
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1、 Reference number ISO 17736:2010(E) ISO 2010INTERNATIONAL STANDARD ISO 17736 First edition 2010-12-15 Workplace air quality Determination of isocyanate in air using a double-filter sampling device and analysis by high pressure liquid chromatography Qualit de lair des lieux de travail Dosage des isoc
2、yanates dans lair au moyen dun dispositif dchantillonnage filtre double et par analyse par chromatographie liquide haute performance ISO 17736:2010(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
3、 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 Central Secretariat accepts no liability in this area. A
4、dobe 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 taken to ensure that the file is suitable for use by IS
5、O 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 2010 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any for
6、m 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-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09
7、47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2010 All rights reservedISO 17736:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Normative references1 3 Principle.1 4 Reagents and materials 2 5 Apparatus.3 6 Air sampling.4 6.1 C
8、alibration of sampling system .4 6.2 Preparation of sampling equipment4 6.3 Preparation of MAMA-impregnated filter 4 6.4 Collection of samples .4 6.5 Blanks.5 7 Procedure.5 7.1 Safety precautions 5 7.2 Calibration standard5 8 Sample processing6 8.1 Vapour analysis .6 8.2 Aerosol analysis 6 9 HPLC co
9、nditions7 9.1 General .7 9.2 HPLC conditions vapour isocyanates 7 9.3 HPLC conditions aerosol isocyanates .7 10 Analysis8 10.1 Calibration curve .8 10.2 Quality control .8 10.3 Sample quantification .8 11 Interference 9 12 Determination of performance characteristics 10 12.1 Introduction10 12.2 Rele
10、vant uncertainty contributions and criteria 10 12.3 Assessment of performance characteristics, following the detailed approach in ISO/IEC Guide 98-3 5 11 Annex A (informative) Performance characteristics .18 Annex B (informative) Sample chromatograms.20 Bibliography27 ISO 17736:2010(E) iv ISO 2010 A
11、ll rights reservedForeword ISO (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 member body interested in a sub
12、ject 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 Electrotechnical Commission (I
13、EC) on all matters of electrotechnical standardization. International Standards are drafted in accordance 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 commit
14、tees 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 of this document may be the subject of patent rights. ISO shall not be
15、 held responsible for identifying any or all such patent rights. ISO 17736 was prepared by Technical Committee ISO/TC 146, Air quality, Subcommittee SC 2, Workplace atmospheres. ISO 17736:2010(E) ISO 2010 All rights reserved vIntroduction Isocyanates are commercially available chemicals used in the
16、polyurethane industry. They are known to cause health problems, such as asthma, contact dermatitis and hypersensitivity pneumonitis, in workers even at very low levels in occupational environments. Since isocyanates are highly reactive compounds and exposure limits are very low, the sampling and the
17、 analysis of these substances are critical. This method is based on the standard method developed by the Institut de Recherche en Sant et en Scurit du Travail Occupational Health and Safety Research Institute (IRSST) of Quebec. It has been in use for more than 18 years as the standard government met
18、hod in that province of Canada. Since 1996, it has been introduced into the marketplace in the USA, Brazil, and the UK. After a years study (Reference 10), the method was adopted in 1998-11 by the US Air Force as an acceptable alternative to NIOSH Method 5521 for monomeric isocyanates (now withdrawn
19、). The method is now routinely used in the Canadian provinces of Alberta, British Columbia, and Ontario, and in the US state of Washington, which has validated the method for TDI. Thirteen laboratories have been schooled in this analytical method, three in Canada, eight in the USA and Mexico, one in
20、 Brazil, and one in the UK. This method has been in use in several countries for many years and 13 laboratories participate in round robin testing on a regular basis in order to maintain their proficiency. The double-filter method has been validated for different applications of isocyanates such as
21、spray-painting (Reference 11) and foam manufacturing. It has also been compared with other established methods and demonstrated equivalent results (Reference 10). Double-filter methods are also available in ASTM D6561 7and ASTM D6562 8for HDI, and ASTM D5932 9for TDI. ISO draws attention to the fact
22、 that it is claimed that compliance with this document may involve the use of a patent concerning the double-filter sampling device for isocyanates. INTERNATIONAL STANDARD ISO 17736:2010(E) ISO 2010 All rights reserved 1Workplace air quality Determination of isocyanate in air using a double-filter s
23、ampling device and analysis by high pressure liquid chromatography 1 Scope This International Standard gives general guidelines for the sampling and analysis of airborne isocyanates in workplace air. This International Standard is appropriate for organic compounds containing free isocyanate function
24、al groups and is specific for the quantification of monomers, polymers and prepolymers, vapours and aerosols. Differential air sampling is performed with a segregating device which can show the physical state of the isocyanates analysed as found in the field. This capacity, however, may show limitat
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