ISO INTERNATIONAL STANDARD 22863-3 First edition 2020-06 Fireworks Test methods for determination of specific chemical substances - Part 3: Lead and lead compounds by atomic absorption Artificesdedivertissement-Méthodesd'essaipourladetermination desubstanceschimiquesspecifiques- Partie3:Plombetcomposésduplombparabsorptionatomique Reference number ISO 22863-3:2020(E) ISO @ISO 2020 IS022863-3:2020(E) COPYRIGHTPROTECTEDDOCUMENT @IS02020 All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 below or Iso's memberbody in the country ofthe requester. ISO copyright office CP 40i : Ch.de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22.749 01 11 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2020 - All rights reserved IS0 22863-3:2020(E) Contents Page Foreword ..iv 1 Scope ..1 2 Normativereferences 3 Termsanddefinitions 4 Principle 5 Reagents. ..1 6 Apparatus .2 7 Preparations .2 8 Analysis steps .2 8.1 Sample size. .2 8.2 General requirement 2 8.3 Test procedure. .3 8.3.1 Digestion process .3 8.3.2 Calibration curve 3 8.3.3 Measurement ..3 9 ..4 Calculations. 10 Accuracy ..4 11 Testreport .4 Annex A (informative) Reference working conditions of microwave digestion oven ..5 AnnexB (informative)Referenceworkingconditionsofatomic spectrometer. .6 AnnexC (informative)Standardadditionmethod .7 @IS0 2020-All rights reserved ili IS022863-3:2020(E) Foreword Iso (theInternational Organization for Standardization)is a worldwidefederation ofnational 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 committee. International organizations,governmental and non-governmental, in liaison with IsO, also takepart in the work. ISo collaborates closely with the International Electrotechnical 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 of IsO documents should be noted.This document was drafted in accordance with the editorialrulesoftheISo/IECDirectives, Part2 (seewww.iso.org/directives) Attention is drawntothepossibilitythat someof theelements ofthisdocumentmaybethe subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. Details of anypatent rights identified duringthe development of thedocument will be in the Introduction and/or on the Iso list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constituteanendorsement. For an explanation of the voluntary nature of standards, the meaning of Iso specific terms and expressions related to conformity assessment,as well as information about Iso's adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/ iso/foreword.html. This document was prepared byTechnical CommitteeISo/TC 264,Fireworks Alist ofall theparts in the ISO22863 series can befound on the ISOwebsite. Any feedback or questions on this document should be directed to the user's national standards body. A completelistingofthesebodiescanbefoundatwwwiso.org/members.html iv @ IS0 2020 - All rights reserved INTERNATIONAL STANDARD IS0 22863-3:2020(E) Fireworks Test methods for determination of specific chemical substances Part 3: Lead and lead compounds by atomic absorption 1 Scope This document specifies the test method for determination of the